Judges, Witnesses, Courts Sources

(א) דִּינֵי מָמוֹנוֹת, בִּשְׁלֹשָׁה. זֶה בּוֹרֵר לוֹ אֶחָד וְזֶה בּוֹרֵר לוֹ אֶחָד, וּשְׁנֵיהֶן בּוֹרְרִין לָהֶן עוֹד אֶחָד, דִּבְרֵי רַבִּי מֵאִיר. וַחֲכָמִים אוֹמְרִים, שְׁנֵי דַיָּנִין בּוֹרְרִין לָהֶן עוֹד אֶחָד. זֶה פּוֹסֵל דַּיָּנוֹ שֶׁל זֶה וְזֶה פּוֹסֵל דַּיָּנוֹ שֶׁל זֶה, דִּבְרֵי רַבִּי מֵאִיר. וַחֲכָמִים אוֹמְרִים, אֵימָתַי, בִּזְמַן שֶׁמֵּבִיא עֲלֵיהֶן רְאָיָה שֶׁהֵן קְרוֹבִין אוֹ פְסוּלִין, אֲבָל אִם הָיוּ כְשֵׁרִים אוֹ מֻמְחִין, אֵינוֹ יָכוֹל לְפָסְלָן. זֶה פּוֹסֵל עֵדָיו שֶׁל זֶה וְזֶה פּוֹסֵל עֵדָיו שֶׁל זֶה, דִּבְרֵי רַבִּי מֵאִיר. וַחֲכָמִים אוֹמְרִים, אֵימָתַי, בִּזְמַן שֶׁהוּא מֵבִיא עֲלֵיהֶם רְאָיָה שֶׁהֵן קְרוֹבִים אוֹ פְסוּלִים. אֲבָל אִם הָיוּ כְשֵׁרִים, אֵינוֹ יָכוֹל לְפָסְלָן:

(1) Cases of monetary law are adjudicated by three. They are chosen in the following manner: This litigant chooses one for himself and that litigant chooses one for himself, and the two of them choose one more for themselves; this is the statement of Rabbi Meir. And the Rabbis say: The two judges that were chosen choose one more judge for themselves. This litigant can disqualify the judge chosen by that litigant and that litigant can disqualify the judge chosen by this litigant; this is the statement of Rabbi Meir. And the Rabbis say: When can one of the litigants disqualify the judges? Only when he brings evidence about them that they are related to one of the litigants or to each other, or that they are disqualified from serving as judges for another reason. But if they are fit to serve as judges or are experts ordained by the court, he cannot disqualify them. This litigant can disqualify the witnesses of that litigant and that litigant can disqualify the witnesses of this litigant; this is the statement of Rabbi Meir. And the Rabbis say: When can one litigant disqualify the other’s witnesses? Only when he brings evidence about them that they are related to one of the litigants or to each other, or that they are disqualified from bearing witness for another reason. But if they are fit to serve as witnesses, he cannot disqualify them.

(ב) אָמַר לוֹ נֶאֱמָן עָלַי אַבָּא, נֶאֱמָן עָלַי אָבִיךָ, נֶאֱמָנִין עָלַי שְׁלֹשָׁה רוֹעֵי בָקָר, רַבִּי מֵאִיר אוֹמֵר, יָכוֹל לַחֲזֹר בּוֹ. וַחֲכָמִים אוֹמְרִים, אֵינוֹ יָכוֹל לַחֲזֹר בּוֹ. הָיָה חַיָּב לַחֲבֵרוֹ שְׁבוּעָה וְאָמַר לוֹ דּוֹר לִי בְחַיֵּי רֹאשְׁךָ, רַבִּי מֵאִיר אוֹמֵר, יָכוֹל לַחֲזֹר בּוֹ. וַחֲכָמִים אוֹמְרִים, אֵין יָכוֹל לַחֲזֹר בּוֹ:

(2) If one litigant says to the other: My father is trusted to adjudicate for me, or: Your father is trusted to adjudicate for me, or: Three cattle herders, who are not proficient in halakha, are trusted to adjudicate for me, all of whom are disqualified from serving as judges, Rabbi Meir says: The one who made the offer can retract it, and the Rabbis say: He cannot retract it, but must accept their verdict. Similarly, one who was obligated by Torah law to take an oath to another, which is done while grasping a sacred object, and the latter said to him: Instead of taking an oath, merely vow to me by the life of your head that what you claim is true, Rabbi Meir says: The one who made the offer can retract it, and demand that the other litigant take an oath, as he is obligated to do by Torah law. And the Rabbis say: He cannot retract his offer. Once he has agreed to accept a vow, which is of less severity than an oath, he cannot retract his agreement.

(ג) וְאֵלּוּ הֵן הַפְּסוּלִין, הַמְשַׂחֵק בְּקֻבְיָא, וְהַמַּלְוֶה בְרִבִּית, וּמַפְרִיחֵי יוֹנִים, וְסוֹחֲרֵי שְׁבִיעִית. אָמַר רַבִּי שִׁמְעוֹן, בִּתְחִלָּה הָיוּ קוֹרִין אוֹתָן אוֹסְפֵי שְׁבִיעִית, מִשֶּׁרַבּוּ הָאַנָּסִין, חָזְרוּ לִקְרוֹתָן סוֹחֲרֵי שְׁבִיעִית. אָמַר רַבִּי יְהוּדָה, אֵימָתַי, בִּזְמַן שֶׁאֵין לָהֶם אֻמָּנוּת אֶלָּא הִיא, אֲבָל יֵשׁ לָהֶן אֻמָּנוּת שֶׁלֹּא הִיא, כְּשֵׁרִין:

(3) And these on the following list are the ones who are disqualified by the Sages from bearing witness due to their unseemly behavior, as they are considered wicked individuals guilty of monetary transgressions: One who plays with dice [bekubbiyya] for money, and one who lends money with interest, and those who fly pigeons, and merchants who trade in the produce of the Sabbatical Year, which may be eaten but may not be sold as an object of commerce. Rabbi Shimon said: Initially, people would call them: Gatherers of the produce of the Sabbatical Year. Once the tax collectors grew abundant they would then call them: Merchants who trade in the produce of the Sabbatical Year, as the Gemara will explain. Rabbi Yehuda said: When are the people listed above disqualified from bearing witness? It is when they have no occupation but this one. But if they have an occupation other than this one, although they also make money by these inappropriate means, they are fit to bear witness.

(ד) וְאֵלּוּ הֵן הַקְּרוֹבִין, אָבִיו וְאָחִיו וַאֲחִי אָבִיו וַאֲחִי אִמּוֹ וּבַעַל אֲחוֹתוֹ וּבַעַל אֲחוֹת אָבִיו וּבַעַל אֲחוֹת אִמּוֹ וּבַעַל אִמּוֹ וְחָמִיו וְגִיסוֹ, הֵן וּבְנֵיהֶן וְחַתְנֵיהֶן, וְחוֹרְגוֹ לְבַדּוֹ. אָמַר רַבִּי יוֹסֵי, זוֹ מִשְׁנַת רַבִּי עֲקִיבָא. אֲבָל מִשְׁנָה רִאשׁוֹנָה, דּוֹדוֹ וּבֶן דּוֹדוֹ. וְכָל הָרָאוּי לְיָרְשׁוֹ, וְכָל הַקָּרוֹב לוֹ בְּאוֹתָהּ שָׁעָה. הָיָה קָרוֹב וְנִתְרַחֵק, הֲרֵי זֶה כָּשֵׁר. רַבִּי יְהוּדָה אוֹמֵר, אֲפִלּוּ מֵתָה בִתּוֹ וְיֶשׁ לוֹ בָנִים מִמֶּנָּה, הֲרֵי זֶה קָרוֹב:

(4) And these are the ones disqualified from bearing witness or from serving as judges due to their status as relatives of one of the litigants or of each other: One’s brother, and his paternal uncle, and his maternal uncle, and his sister’s husband, and the husband of his paternal aunt, and the husband of his maternal aunt, and his mother’s husband, and his father-in-law, and his brother-in-law, i.e., the husband of his wife’s sister. They themselves, all of these people, and also their sons, and their sons-in-law are considered relatives. And his stepson alone is disqualified, but not his stepson’s sons or sons-in-law. Rabbi Yosei says: This aforementioned halakha is Rabbi Akiva’s version of the mishna. But the initial version of the mishna reads as follows: His uncle and the son of his uncle, and anyone who is fit to inherit from him. Only paternal relatives, who are fit to inherit from him, are disqualified; maternal relatives, who do not inherit from him, are not disqualified from bearing witness about him or from adjudicating his case. And the halakha disqualifying a relative from bearing witness or serving as a judge is referring to anyone who is related to him at the time of the trial. If one was once a relative and became unrelated by the time of the trial, e.g., he married the daughter of one of the litigants, but she died or they were divorced, in this case he is fit. Rabbi Yehuda says: Even if his daughter died but her husband, the former son-in-law, has children from her, he is still considered a relative; the children cause them to remain related.

(ה) הָאוֹהֵב וְהַשּׂוֹנֵא. אוֹהֵב, זֶה שׁוּשְׁבִינוֹ. שׂוֹנֵא, כָּל שֶׁלֹּא דִבֶּר עִמּוֹ שְׁלֹשָׁה יָמִים בְּאֵיבָה. אָמְרוּ לוֹ, לֹא נֶחְשְׁדוּ יִשְׂרָאֵל עַל כָּךְ:

(5) One who loves or one who hates one of the litigants is also disqualified. With regard to one who loves one of the litigants, this is referring to his groomsman. One who hates is referring to anyone who, out of enmity, did not speak with the litigant for three days. The Rabbis said to Rabbi Yehuda: The Jewish people are not suspected of bearing false witness due to love or hate.

Cases concerning property [are decided] by three [judges].
This [litigant] chooses one and this [litigant] chooses one and then the two of them choose another, according to Rabbi Meir. But the Sages say: “The two judges choose the other judge.”
This [litigant] can invalidate this one’s judge, and this [litigant] can invalidate this one’s judge, according to Rabbi Meir. But the Sages say: “When is this so? When they bring proof against them that they are relatives or otherwise invalid; but if they are valid and experts, he cannot invalidate them.
This [litigant] may invalidate this one’s witnesses and this [litigant] may invalidate this one’s witnesses, according to Rabbi Meir. But the Sages say: “When is this so? When they bring proof against them that they are relatives or otherwise invalid; but if they are valid, he cannot invalidate them.

Chapter Three begins to discuss the court procedure in cases of financial matters, which only require three judges. The first mishnah discusses the selection of judges.
This mishnah contains three disputes between Rabbi Meir and the Sages with regards to the selection of judges and witnesses in cases concerning property disputes. All agree that the first two judges are selected by the litigants themselves, each litigant choosing one judge. However, Rabbi Meir and the Sages dispute with regards to the selection of the third judge. Rabbi Meir holds that the litigants together select a third judge and the Sages hold that the first two judges, those already selected by the litigants, are the ones to select the third judge.
With regards to the invalidation of the judges, Rabbi Meir holds that each litigant can indiscriminately invalidate the judge who was chosen by the opposing litigant. The Sages hold that the judges may only be invalidated on objective grounds, for either being relatives of the litigant or otherwise invalid. (We will learn more about the what cause a person to be invalid to be a a judge in mishnah three). If the judges are otherwise valid the opposing litigant may not disqualify them.
The Sages and Rabbi Meir have basically the same dispute with regard to witnesses. Note, that in this case Rabbi Meir’s opinion is much more radical. If a litigant can disqualify his rival’s witnesses without any due cause, how could anyone ever be convicted. The Talmud deliberates at length on this problem and makes several suggestions: 1) the litigant can only disqualify witnesses when there is only one witness. In such a case, since there are not the requisite number of witnesses, the litigant is not truly destroying his rival’s case; 2) the mishnah deals with a case where a person has two sets of witnesses, and the rival disqualifies only one set; 3) the rival has another witness who testifies with him that the other witnesses are disqualified; 4) the litigant claimed that the judges and witnesses were not valid. When it is established by independent evidence that he told the truth about the judges, he is believed with regard to the witnesses.
In any case, from the fact that there are four solutions to this problem, we can see how puzzling Rabbi Meir’s opinion truly is.
Introduction This mishnah deals with the ability of the litigant to retract on a deal he made before the trial began.
Introduction Mishnah three lists those people disqualified from testifying and judging.
And these are they which are not qualified [to be witnesses or judges]:
A dice player, a usurer, pigeon racers, or traffickers in Seventh Year produce. Rabbi Shimon said: “In the beginning they called them ‘gatherers’ of Seventh Year produce, but after the oppressors grew many they changed this and called them ‘traffickers’ of Seventh Year produce.” Rabbi Judah said: “This applies only if they have no other trade, but if they have some other trade other than that, they are not disqualified.”
There are four types of people who are disqualified from acting as witnesses or judges: 1) The first is a dice player, in other words a gambler. Such a person cannot testify since he is known to be a liar, especially with regards to monetary matters. Another reason is that he doesn’t participate constructively in building society. 2) A usurer. He is also probably considered to not be trustworthy in monetary matters. 3) A pigeon racer. Racing pigeons was a form of gambling. 4) Those who sell produce grown during the Seventh Year. According to Lev. 25:5-7 produce grown in the fields during the Seventh Year may be eaten by its owners, but it may not be sold. One who therefore sells Seventh Year produce is engaging in forbidden business practices which according to our mishnah make him not trustworthy to testify or act as a judge. Rabbi Shimon points out that this law actually was different in an earlier period. According to Rabbi Shimon at first the law was stricter and forbade even those who gathered Seventh Year produce from testifying or judging. Although eating from the fields was permitted, a person who gathered the produce was suspected of later selling it, which was prohibited. Therefore, they originally forbade even those who gathered Seventh Year produce from testifying. However, once the oppressors grew too many they relaxed the prohibition. In the Talmud it is explained that the “oppressors” refers to the Roman government which demanded taxes from the produce grown on the land, even during the Seventh Year. The Rabbis therefore permitted a person to gather his produce and give it for taxes. When this happened they decided to allow people who gathered Seventh Year produce to testify. Rabbi Judah adds an important qualification on those who are prohibited from testifying. These people are disallowed to testify only if they have no other profession. If gambling or racing pigeons was only a hobby or an irregular activity they could still act as witnesses or as judges.
Introduction Mishnah four lists which relatives are forbidden to testify or act as judges at a trial.
These are the relatives [that are not qualified to be witnesses or judges]:
A suitor’s father, brother, father’s brother, mother’s brother, sister’s husband, father’s sister’s husband, mother’s sister’s husband, mother’s husband, father-in-law, or wife’s sister’s husband them and their sons and their sons-in-law; also the suitor’s step-son only [but not the stepsons’ sons]. Rabbi Yose said, “Such was the mishnah of Rabbi Akiva, but the first mishnah taught: ‘a suitor’s uncle, or his uncle’s son, and all that are qualified to be his heir.
The first section lists relatives who are disqualified from testifying. The list is self explanatory, and only a few require explanation. A mother’s husband refers to someone who is not the suitor’s father. Any son or son-in-law of any of these listed relatives is likewise forbidden to testify. For instance one’s father’s brother’s son (a cousin) is forbidden to testify. The only exception is that the suitor’s stepson, i.e. his wife’s son from another marriage, is forbidden to testify but stepson’s son is allowed. Rabbi Yose gives us a glimpse into the development of the Mishnah. The previous clause was the mishnah of Rabbi Akiva, who lived from about 50-135 C.E. Rabbi Yose then relates the way it was taught before this time. While there are some legal differences between the two formulations, the most basic difference is that “first mishnah” used language that approximated Biblical style (see Lev. 25:49). This change from the earlier language to the later style which was more distinct from the Biblical language, may signify the growing independence of the Oral Torah from the Written Torah. It seems likely that in an earlier stage the Oral Torah was usually preserved as an exegesis or midrash on the verses of the Torah. The advantage to this system was that the Torah was a text known to most. The second advantage was that it was clear that Rabbinic law attained its authority by its being an interpretation of Biblical law. However, the biggest detriment was its lack of organization. Many laws appear in parallel forms in several books of the Torah. For instance laws concerning slavery appear in Exodus, Leviticus and Deuteronomy. Laws concerning the redemption of the first born appear in Exodus, Leviticus, Numbers and Deuteronomy. One who wished to know the law would not know where to find it. One of the innovations of Rabbi Akiva was to sort Jewish law into topical tractates. In our mishnah we see that as this processed developed the language of the laws changed from Biblical to Rabbinic Hebrew. As far as substantive differences between the first mishnah and Rabbi Akiva’s mishnah. There are three potential differences: his mother’s sister’s husband, his mother’s husband and his wife’s sister’s husband. These three men are not potential inheritors and therefore could testify according to the first mishnah, but they may not according to Rabbi Akiva’s mishnah.
Moreover all that were kinsmen at the time [are disqualified]; but kinsmen that have ceased to be kinsmen become qualified.” Rabbi Judah says: “If a man’s daughter died and left children, her husband still counts as a kinsman.” Only if the relative is a current relative may he not testify. If the relationship is by marriage and it is severed through divorce before the trial, the formal relative may testify. Rabbi Judah states that there is one exception to this rule. If a daughter married a man and had children the husband cannot testify, even after the daughter dies. Since the children bind the husband to the grandfather, he is still considered to be a relative.
A friend or an enemy [is disqualified]. “A friend”: this is one’s groomsman. “An enemy”: anyone whom he has not spoken to in three days because of anger.
They replied: “Israelites are not suspected of such.”

Mishnah five continues to discuss those people who are disqualified from testifying or acting as judges.
The first clause in the mishnah states that one may not testify or judge in a trial involving one’s friend or enemy. The next two clauses define the first clause. “A friend” who is disqualified from testifying or judging is a man’s groomsman, a person who helped him celebrate his wedding. “An enemy” is anyone with whom one has not spoken for three days due to anger.
It must be assumed that the first three clauses are a continuation of Rabbi Judah’s words, begun in the previous mishnah. The Sages in section 1d respond to Rabbi Judah by claiming that Jews are not suspected of lying in court because they are testifying with regards to a friend or enemy. Therefore, a person may testify and judge in cases involving a friend or an enemy.
אמ"ת ממו"ן ירא"ה סימן: אמר רבי שמואל בר נחמני אמר רבי יונתן כל דיין שדן דין אמת לאמיתו משרה שכינה בישראל שנאמר (תהלים פב, א) אלהים נצב בעדת אל בקרב אלהים ישפוט וכל דיין שאינו דן דין אמת לאמיתו גורם לשכינה שתסתלק מישראל שנאמר (תהלים יב, ו) משוד עניים מאנקת אביונים עתה אקום יאמר ה' וגו'
§ The Gemara provides a mnemonic device indicating the following series of statements about judges and their functions: Emet mamon yireh. Rabbi Shmuel bar Naḥmani says that Rabbi Yonatan says: Any judge who judges a judgment according to absolute truth [emet] causes the Divine Presence to rest among Israel, as it is stated: “God stands in the congregation of God; in the midst of the judges He judges” (Psalms 82:1), indicating that the Divine Presence is in the midst of the court. And every judge who does not judge a judgment according to absolute truth causes the Divine Presence to withdraw from Israel, as it is stated: “For the oppression of the poor, for the sighing of the needy, now will I arise, says the Lord” (Psalms 12:6). God will arise and leave the people as a result of oppression.
ואמר רבי שמואל בר (נחמן) אמר רבי יונתן כל דיין שנוטל מזה ונותן לזה שלא כדין הקדוש ברוך הוא נוטל ממנו נפשו שנאמר (משלי כב, כב) אל תגזול דל כי דל הוא ואל תדכא עני בשער כי ה' יריב ריבם וקבע את קובעיהם נפש
And Rabbi Shmuel bar Naḥmani says that Rabbi Yonatan says: With regard to any judge who takes disputed property or money [mamon] from this litigant and gives it to that other litigant unlawfully, the Holy One, Blessed be He, takes his soul from him as punishment for his corruption, as it is stated: “Rob not the weak, because he is weak, neither crush the poor in the gate; for the Lord will plead their cause and despoil of life those who despoil them” (Proverbs 22:22–23). God cautions that He will take the life of one who steals from the poor at the gate, meaning in the courtroom, as the city gate was the traditional site of the community’s court.
ואמר רבי שמואל בר נחמני אמר רבי יונתן לעולם יראה דיין עצמו כאילו חרב מונחת לו בין ירכותיו וגיהנם פתוחה לו מתחתיו
And Rabbi Shmuel bar Naḥmani says that Rabbi Yonatan says: A judge should always view [yireh] himself as if a sword is placed between his thighs, so that if he leans to the right or to the left he will be injured, and as if Gehenna is opened up beneath him,
שנאמר (שיר השירים ג, ז) הנה מטתו שלשלמה ששים גבורים סביב לה מגבורי ישראל כולם אחוזי חרב מלומדי מלחמה איש חרבו על יריכו מפחד בלילות מפחדה של גיהנם שדומה ללילה
as it is stated: “Behold, it is the bed of Solomon; sixty mighty men are around it, of the mighty men of Israel. They all handle the sword, and are expert in war; every man has his sword upon his thigh due to dread in the night” (Song of Songs 3:7–8). The words “due to dread in the night” mean due to the dread of Gehenna, which is similar to the night. Rabbi Shmuel bar Naḥmani interprets this verse as referring to judges, who are called: Mighty men of Israel, as they preside in the Temple, which is termed: The bed of God. In this verse, God is referred to as: Solomon [Shlomo], the King to Whom peace [shalom] belongs.

...אמ"ת ממו"ן ירא"ה סימן: אמר רבי שמואל בר נחמני אמר רבי יונתן כל דיין שדן דין אמת לאמיתו משרה שכינה בישראל שנאמר (תהלים פב, א) אלהים נצב בעדת אל בקרב אלהים ישפוט וכל דיין שאינו דן דין אמת לאמיתו גורם לשכינה שתסתלק מישראל שנאמר (תהלים יב, ו) משוד עניים מאנקת אביונים עתה אקום יאמר ה' וגו' ואמר רבי שמואל בר (נחמן) אמר רבי יונתן כל דיין שנוטל מזה ונותן לזה שלא כדין הקדוש ברוך הוא נוטל ממנו נפשו שנאמר (משלי כב, כב) אל תגזול דל כי דל הוא ואל תדכא עני בשער כי ה' יריב ריבם וקבע את קובעיהם נפש ואמר רבי שמואל בר נחמני אמר רבי יונתן לעולם יראה דיין עצמו כאילו חרב מונחת לו בין ירכותיו וגיהנם פתוחה לו מתחתיו

§ The Gemara provides a mnemonic device indicating the following series of statements about judges and their functions: Emet mamon yireh. Rabbi Shmuel bar Naḥmani says that Rabbi Yonatan says: Any judge who judges a judgment according to absolute truth [emet] causes the Divine Presence to rest among Israel, as it is stated: “God stands in the congregation of God; in the midst of the judges He judges” (Psalms 82:1), indicating that the Divine Presence is in the midst of the court. And every judge who does not judge a judgment according to absolute truth causes the Divine Presence to withdraw from Israel, as it is stated: “For the oppression of the poor, for the sighing of the needy, now will I arise, says the Lord” (Psalms 12:6). God will arise and leave the people as a result of oppression. And Rabbi Shmuel bar Naḥmani says that Rabbi Yonatan says: With regard to any judge who takes disputed property or money [mamon] from this litigant and gives it to that other litigant unlawfully, the Holy One, Blessed be He, takes his soul from him as punishment for his corruption, as it is stated: “Rob not the weak, because he is weak, neither crush the poor in the gate; for the Lord will plead their cause and despoil of life those who despoil them” (Proverbs 22:22–23). God cautions that He will take the life of one who steals from the poor at the gate, meaning in the courtroom, as the city gate was the traditional site of the community’s court. And Rabbi Shmuel bar Naḥmani says that Rabbi Yonatan says: A judge should always view [yireh] himself as if a sword is placed between his thighs, so that if he leans to the right or to the left he will be injured, and as if Gehenna is opened up beneath him,

שנאמר (שיר השירים ג, ז) הנה מטתו שלשלמה ששים גבורים סביב לה מגבורי ישראל כולם אחוזי חרב מלומדי מלחמה איש חרבו על יריכו מפחד בלילות מפחדה של גיהנם שדומה ללילה

as it is stated: “Behold, it is the bed of Solomon; sixty mighty men are around it, of the mighty men of Israel. They all handle the sword, and are expert in war; every man has his sword upon his thigh due to dread in the night” (Song of Songs 3:7–8). The words “due to dread in the night” mean due to the dread of Gehenna, which is similar to the night. Rabbi Shmuel bar Naḥmani interprets this verse as referring to judges, who are called: Mighty men of Israel, as they preside in the Temple, which is termed: The bed of God. In this verse, God is referred to as: Solomon [Shlomo], the King to Whom peace [shalom] belongs.

outorah.org/p/339/

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(יט) לֹא־תַטֶּ֣ה מִשְׁפָּ֔ט לֹ֥א תַכִּ֖יר פָּנִ֑ים וְלֹא־תִקַּ֣ח שֹׁ֔חַד כִּ֣י הַשֹּׁ֗חַד יְעַוֵּר֙ עֵינֵ֣י חֲכָמִ֔ים וִֽיסַלֵּ֖ף דִּבְרֵ֥י צַדִּיקִֽם׃
(19) You shall not judge unfairly: you shall show no partiality; you shall not take bribes, for bribes blind the eyes of the discerning and upset the plea of the just.
בֵּית דִּין שֶׁל שְׁלֹשָׁה אַף עַל פִּי שֶׁאֵין מְדַקְדְּקִין בָּהֶן בְּכָל אֵלּוּ הַדְּבָרִים צָרִיךְ שֶׁיְּהֵא בְּכָל אֶחָד מֵהֶן שִׁבְעָה דְּבָרִים וְאֵלּוּ הֵן. חָכְמָה. וַעֲנָוָה. וְיִרְאָה. וְשִׂנְאַת מָמוֹן. וְאַהֲבַת הָאֱמֶת. וְאַהֲבַת הַבְּרִיּוֹת לָהֶן. וּבַעֲלֵי שֵׁם טוֹב. וְכָל אֵלּוּ הַדְּבָרִים מְפֹרָשִׁין הֵן בַּתּוֹרָה. הֲרֵי הוּא אוֹמֵר (דברים א יג) "אֲנָשִׁים חֲכָמִים וּנְבֹנִים" הֲרֵי בַּעֲלֵי חָכְמָה אָמוּר. (דברים א יג) "וִידֻעִים לְשִׁבְטֵיכֶם" אֵלּוּ שֶׁרוּחַ הַבְּרִיּוֹת נוֹחָה מֵהֶם. וּבַמֶּה יִהְיוּ אֲהוּבִים לַבְּרִיּוֹת בִּזְמַן שֶׁיִּהְיוּ בַּעֲלֵי עַיִן טוֹבָה. וְנֶפֶשׁ שְׁפָלָה. וְחֶבְרָתָן טוֹבָה. וְדִבּוּרָן וּמַשָּׂאָן בְּנַחַת עִם הַבְּרִיּוֹת. וּלְהַלָּן הוּא אוֹמֵר (שמות יח כא) "אַנְשֵׁי חַיִל" אֵלּוּ שֶׁהֵן גִּבּוֹרִים בְּמִצְוֹת וּמְדַקְדְּקִים עַל עַצְמָם וְכוֹבְשִׁין אֶת יִצְרָן עַד שֶׁלֹּא יְהֵא לָהֶן שׁוּם גְּנַאי וְלֹא שֵׁם רַע וִיהֵא פִּרְקָן נָאֶה. וּבִכְלַל אַנְשֵׁי חַיִל שֶׁיִּהְיֶה לָהֶן לֵב אַמִּיץ לְהַצִּיל עָשׁוּק מִיַּד עוֹשְׁקוֹ כָּעִנְיָן שֶׁנֶּאֱמַר (שמות ב יז) "וַיָּקָם משֶׁה וַיּוֹשִׁעָן". וּמָה משֶׁה רַבֵּנוּ עָנָו אַף כָּל דַּיָּן צָרִיךְ לִהְיוֹת עָנָו. (שמות יח כא) "יִרְאֵי אֱלֹהִים" כְּמַשְׁמָעוֹ. (שמות יח כא) "שֹׂנְאֵי בָצַע" אַף מָמוֹן שֶׁלָּהֶם אֵינָן נִבְהָלִין עָלָיו. וְלֹא רוֹדְפִין לְקַבֵּץ הַמָּמוֹן. שֶׁכָּל מִי שֶׁהוּא נִבְהָל לַהוֹן חֶסֶר יְבוֹאֶנּוּ. (שמות יח כא) "אַנְשֵׁי אֱמֶת" שֶׁיִּהְיוּ רוֹדְפִין אַחַר הַצֶּדֶק מֵחֲמַת עַצְמָן בְּדַעְתָּן. אוֹהֲבִין אֶת הָאֱמֶת וְשׂוֹנְאִין אֶת הֶחָמָס וּבוֹרְחִין מִכָּל מִינֵי הֶעָוֶל:
We are not careful to demand that a judge for a court of three possess all these qualities. He must, however, possess seven attributes: wisdom, humility, the fear of God, a loathing for money, a love for truth; he must be a person who is beloved by people at large, and must have a good reputation.
All of these qualities are mentioned explicitly in the Torah. When relating Moses' statements concerning the appointment of judges, Deuteronomy 1:13 mentions: "Men of wisdom and understanding." This refers to wisdom.
The verse continues: "Beloved by your tribes." This refers to those who are appreciated by people at large. What will make them beloved by people? Conducting themselves with a favorable eye and a humble spirit, being good company, and speaking and conducting their business with people gently.
When relating Jethro's advice to Moses to appoint judges, Exodus 18:21 speaks of "men of power." This refers to people who are mighty in their observance of the mitzvot, who are very demanding of themselves, and who overcome their evil inclination until they possess no unfavorable qualities, no trace of an unpleasant reputation, even during their early manhood, they were spoken of highly. The phrase "men of power" also implies that they should have a courageous heart to save an oppressed person from the one oppressing him, as Exodus 18:21 continues: "God-fearing" - the intent is obvious. It mentions: "men who hate profit," i.e., people who do not become overly concerned even about their own money. They do not pursue the accumulation of money, for anyone who is overly concerned about wealth will ultimately be overcome by want.
The verse continues: "men of truth," i.e., people who pursue justice because of their own inclination; they love truth, hate crime, and flee from all forms of crookedness.
אֵין מַעֲמִידִין בְּסַנְהֶדְרִין בֵּין בִּגְדוֹלָה בֵּין בִּקְטַנָּה אֶלָּא אֲנָשִׁים חֲכָמִים וּנְבוֹנִים. מֻפְלָגִין בְּחָכְמַת הַתּוֹרָה בַּעֲלֵי דֵּעָה מְרֻבָּה. יוֹדְעִים קְצָת מִשְּׁאָר חָכְמוֹת כְּגוֹן רְפוּאוֹת וְחֶשְׁבּוֹן וּתְקוּפוֹת וּמַזָּלוֹת וְאִצְטַגְנִינוּת וְדַרְכֵי הַמְעוֹנְנִים וְהַקּוֹסְמִים וְהַמְכַשְּׁפִים וְהַבְלֵי עֲבוֹדָה זָרָה וְכַיּוֹצֵא בְּאֵלּוּ כְּדֵי שֶׁיִּהְיוּ יוֹדְעִים לָדוּן אוֹתָם. וְאֵין מַעֲמִידִין בְּסַנְהֶדְרִין אֶלָּא כֹּהֲנִים לְוִיִּים וְיִשְׂרְאֵלִים הַמְיֻחָסִים הָרְאוּיִים לְהַשִּׂיא לִכְהֻנָּה. שֶׁנֶּאֱמַר (במדבר יא טז) "וְהִתְיַצְּבוּ שָׁם עִמָּךְ" בְּדוֹמִין לְךָ בְּחָכְמָה וּבְיִרְאָה וּבְיַחַס:
We appoint to a Sanhedrin - both to the Supreme Sanhedrin and to a minor Sanhedrin - only men of wisdom and understanding, of unique distinction in their knowledge of the Torah and who possess a broad intellectual potential. They should also have some knowledge concerning other intellectual disciplines, e.g., medicine, mathematics, the fixation of the calendar, astronomy, astrology, and also the practices of fortune-telling, magic, sorcery, and the hollow teachings of idolatry, so that they will know how to judge them.
We appoint to the Sanhedrin only priests, Levites, and Israelites of lineage of fine repute who can marry into the priesthood. This is derived from Number 11:16: "And they shall stand there with you." Implied is that they should resemble you, Moses in wisdom, the fear of heaven, and in lineage.
(ג) וְדָ֕ל לֹ֥א תֶהְדַּ֖ר בְּרִיבֽוֹ׃ {ס}
(3) nor shall you show deference to a poor person in a dispute.
(טו) לֹא־תַעֲשׂ֥וּ עָ֙וֶל֙ בַּמִּשְׁפָּ֔ט לֹא־תִשָּׂ֣א פְנֵי־דָ֔ל וְלֹ֥א תֶהְדַּ֖ר פְּנֵ֣י גָד֑וֹל בְּצֶ֖דֶק תִּשְׁפֹּ֥ט עֲמִיתֶֽךָ׃
(15) You shall not render an unfair decision: do not favor the poor or show deference to the rich; judge your kin fairly.

(א) אֶחָד דִּינֵי מָמוֹנוֹת וְאֶחָד דִּינֵי נְפָשׁוֹת, בִּדְרִישָׁה וּבַחֲקִירָה, שֶׁנֶּאֱמַר (ויקרא כד) מִשְׁפַּט אֶחָד יִהְיֶה לָכֶם. מַה בֵּין דִּינֵי מָמוֹנוֹת לְדִינֵי נְפָשׁוֹת. דִּינֵי מָמוֹנוֹת בִּשְׁלֹשָׁה, וְדִינֵי נְפָשׁוֹת בְּעֶשְׂרִים וּשְׁלֹשָׁה. דִּינֵי מָמוֹנוֹת פּוֹתְחִין בֵּין לִזְכוּת בֵּין לְחוֹבָה, וְדִינֵי נְפָשׁוֹת פּוֹתְחִין לִזְכוּת וְאֵין פּוֹתְחִין לְחוֹבָה. דִּינֵי מָמוֹנוֹת מַטִּין עַל פִּי אֶחָד בֵּין לִזְכוּת בֵּין לְחוֹבָה, וְדִינֵי נְפָשׁוֹת מַטִּין עַל פִּי אֶחָד לִזְכוּת וְעַל פִּי שְׁנַיִם לְחוֹבָה. דִּינֵי מָמוֹנוֹת מַחֲזִירִין בֵּין לִזְכוּת בֵּין לְחוֹבָה, דִּינֵי נְפָשׁוֹת מַחֲזִירִין לִזְכוּת וְאֵין מַחֲזִירִין לְחוֹבָה. דִּינֵי מָמוֹנוֹת הַכֹּל מְלַמְּדִין זְכוּת וְחוֹבָה, דִּינֵי נְפָשׁוֹת הַכֹּל מְלַמְּדִין זְכוּת וְאֵין הַכֹּל מְלַמְּדִין חוֹבָה. דִּינֵי מָמוֹנוֹת הַמְלַמֵּד חוֹבָה מְלַמֵּד זְכוּת וְהַמְלַמֵּד זְכוּת מְלַמֵּד חוֹבָה, דִּינֵי נְפָשׁוֹת הַמְלַמֵּד חוֹבָה מְלַמֵּד זְכוּת, אֲבָל הַמְלַמֵּד זְכוּת אֵין יָכוֹל לַחֲזֹר וּלְלַמֵּד חוֹבָה. דִּינֵי מָמוֹנוֹת דָּנִין בַּיּוֹם וְגוֹמְרִין בַּלַּיְלָה, דִּינֵי נְפָשׁוֹת דָּנִין בַּיּוֹם וְגוֹמְרִין בַּיּוֹם. דִּינֵי מָמוֹנוֹת גּוֹמְרִין בּוֹ בַיּוֹם בֵּין לִזְכוּת בֵּין לְחוֹבָה, דִּינֵי נְפָשׁוֹת גּוֹמְרִין בּוֹ בַיּוֹם לִזְכוּת וּבְיוֹם שֶׁלְּאַחֲרָיו לְחוֹבָה, לְפִיכָךְ אֵין דָּנִין לֹא בְעֶרֶב שַׁבָּת וְלֹא בְעֶרֶב יוֹם טוֹב:

(ב) דִּינֵי הַטֻּמְאוֹת וְהַטָּהֳרוֹת מַתְחִילִין מִן הַגָּדוֹל, דִּינֵי נְפָשׁוֹת מַתְחִילִין מִן הַצָּד. הַכֹּל כְּשֵׁרִין לָדוּן דִּינֵי מָמוֹנוֹת וְאֵין הַכֹּל כְּשֵׁרִין לָדוּן דִּינֵי נְפָשׁוֹת, אֶלָּא כֹהֲנִים, לְוִיִּם, וְיִשְׂרְאֵלִים הַמַּשִּׂיאִין לַכְּהֻנָּה:

(ג) סַנְהֶדְרִין הָיְתָה כַּחֲצִי גֹרֶן עֲגֻלָּה, כְּדֵי שֶׁיְּהוּ רוֹאִין זֶה אֶת זֶה. וּשְׁנֵי סוֹפְרֵי הַדַּיָּנִין עוֹמְדִין לִפְנֵיהֶם, אֶחָד מִיָּמִין וְאֶחָד מִשְּׂמֹאל, וְכוֹתְבִין דִּבְרֵי הַמְזַכִּין וְדִבְרֵי הַמְחַיְּבִין. רַבִּי יְהוּדָה אוֹמֵר, שְׁלֹשָׁה, אֶחָד כּוֹתֵב דִּבְרֵי הַמְזַכִּין, וְאֶחָד כּוֹתֵב דִּבְרֵי הַמְחַיְּבִין, וְהַשְּׁלִישִׁי כוֹתֵב דִּבְרֵי הַמְזַכִּין וְדִבְרֵי הַמְחַיְּבִין:

(ד) וְשָׁלֹשׁ שׁוּרוֹת שֶׁל תַּלְמִידֵי חֲכָמִים יוֹשְׁבִין לִפְנֵיהֶם, כָּל אֶחָד וְאֶחָד מַכִּיר אֶת מְקוֹמוֹ. הָיוּ צְרִיכִין לִסְמֹךְ, סוֹמְכִין מִן הָרִאשׁוֹנָה. אֶחָד מִן הַשְּׁנִיָּה בָּא לוֹ לָרִאשׁוֹנָה וְאֶחָד מִן הַשְּׁלִישִׁית בָּא לוֹ לַשְּׁנִיָּה, וּבוֹרְרִין לָהֶן עוֹד אֶחָד מִן הַקָּהָל וּמוֹשִׁיבִין אוֹתוֹ בַשְּׁלִישִׁית. וְלֹא הָיָה יוֹשֵׁב בִּמְקוֹמוֹ שֶׁל רִאשׁוֹן, אֶלָּא יוֹשֵׁב בְּמָקוֹם הָרָאוּי לוֹ:

(ה) כֵּיצַד מְאַיְּמִין אֶת הָעֵדִים עַל עֵדֵי נְפָשׁוֹת, הָיוּ מַכְנִיסִין אוֹתָן וּמְאַיְּמִין עֲלֵיהֶן. שֶׁמָּא תֹאמְרוּ מֵאֹמֶד, וּמִשְּׁמוּעָה, עֵד מִפִּי עֵד וּמִפִּי אָדָם נֶאֱמָן שָׁמַעְנוּ, אוֹ שֶׁמָּא אִי אַתֶּם יוֹדְעִין שֶׁסּוֹפֵנוּ לִבְדֹּק אֶתְכֶם בִּדְרִישָׁה וּבַחֲקִירָה. הֱווּ יוֹדְעִין שֶׁלֹּא כְדִינֵי מָמוֹנוֹת דִּינֵי נְפָשׁוֹת. דִּינֵי מָמוֹנוֹת, אָדָם נוֹתֵן מָמוֹן וּמִתְכַּפֵּר לוֹ. דִּינֵי נְפָשׁוֹת, דָּמוֹ וְדַם זַרְעִיּוֹתָיו תְּלוּיִין בּוֹ עַד סוֹף הָעוֹלָם, שֶׁכֵּן מָצִינוּ בְקַיִן שֶׁהָרַג אֶת אָחִיו, שֶׁנֶּאֱמַר (בראשית ד) דְּמֵי אָחִיךָ צֹעֲקִים, אֵינוֹ אוֹמֵר דַּם אָחִיךָ אֶלָּא דְּמֵי אָחִיךָ, דָּמוֹ וְדַם זַרְעִיּוֹתָיו. דָּבָר אַחֵר, דְּמֵי אָחִיךָ, שֶׁהָיָה דָמוֹ מֻשְׁלָךְ עַל הָעֵצִים וְעַל הָאֲבָנִים. לְפִיכָךְ נִבְרָא אָדָם יְחִידִי, לְלַמֶּדְךָ, שֶׁכָּל הַמְאַבֵּד נֶפֶשׁ אַחַת מִיִּשְׂרָאֵל, מַעֲלֶה עָלָיו הַכָּתוּב כְּאִלּוּ אִבֵּד עוֹלָם מָלֵא. וְכָל הַמְקַיֵּם נֶפֶשׁ אַחַת מִיִּשְׂרָאֵל, מַעֲלֶה עָלָיו הַכָּתוּב כְּאִלּוּ קִיֵּם עוֹלָם מָלֵא. וּמִפְּנֵי שְׁלוֹם הַבְּרִיּוֹת, שֶׁלֹּא יֹאמַר אָדָם לַחֲבֵרוֹ אַבָּא גָדוֹל מֵאָבִיךָ. וְשֶׁלֹּא יְהוּ מִינִין אוֹמְרִים, הַרְבֵּה רָשֻׁיּוֹת בַּשָּׁמָיִם. וּלְהַגִּיד גְּדֻלָּתוֹ שֶׁל הַקָּדוֹשׁ בָּרוּךְ הוּא, שֶׁאָדָם טוֹבֵעַ כַּמָּה מַטְבְּעוֹת בְּחוֹתָם אֶחָד וְכֻלָּן דּוֹמִין זֶה לָזֶה, וּמֶלֶךְ מַלְכֵי הַמְּלָכִים הַקָּדוֹשׁ בָּרוּךְ הוּא טָבַע כָּל אָדָם בְּחוֹתָמוֹ שֶׁל אָדָם הָרִאשׁוֹן וְאֵין אֶחָד מֵהֶן דּוֹמֶה לַחֲבֵרוֹ. לְפִיכָךְ כָּל אֶחָד וְאֶחָד חַיָּב לוֹמַר, בִּשְׁבִילִי נִבְרָא הָעוֹלָם. וְשֶׁמָּא תֹאמְרוּ מַה לָּנוּ וְלַצָּרָה הַזֹּאת, וַהֲלֹא כְבָר נֶאֱמַר (ויקרא ה) וְהוּא עֵד אוֹ רָאָה אוֹ יָדָע אִם לוֹא יַגִּיד וְגוֹ'. וְשֶׁמָּא תֹאמְרוּ מַה לָּנוּ לָחוּב בְּדָמוֹ שֶׁל זֶה, וַהֲלֹא כְבָר נֶאֱמַר (משלי יא) וּבַאֲבֹד רְשָׁעִים רִנָּה:

(1) Both cases of monetary law and cases of capital law are equal with regard to the requirement for inquiry and interrogation of the witnesses, as it is stated: “You shall have one manner of law” (Leviticus 24:22), meaning that all legal procedures must be uniform. Having stated the essential similarity between the two, the mishna enumerates the differences between them. What are the differences between cases of monetary law and cases of capital law? Cases of monetary law are judged by a court of three judges, and cases of capital law are judged by a court of twenty-three judges. In cases of monetary law, the court opens the deliberations either with a claim to exempt the accused, or with a claim to find him liable. And in cases of capital law, the court opens the deliberations with a claim to acquit the accused, but it does not open the deliberations with a claim to find him liable. In cases of monetary law, the court directs, i.e., issues, the ruling based on a majority of one judge, either to exempt, or to find liable. But in cases of capital law, the court directs the judgment based on a majority of one judge to acquit and based on a majority of two judges to find liable. In cases of monetary law, the court brings the accused back to be judged again if new evidence arises, either with a claim to exempt the accused, or with a claim to find him liable. In cases of capital law, the court brings the accused back to be judged again with a claim to acquit him, but the court does not bring him back to be judged with a claim to find him liable. In cases of monetary law, all those present at the trial may teach a reason to exempt a litigant or to find him liable. In cases of capital law, all those present at the trial may teach a reason to acquit the accused, but not all present may teach a reason to find him liable. Only the judges can teach a reason to find him liable. In cases of monetary law, one who initially teaches a reason to find the accused liable may then teach a reason to exempt him, and one who initially teaches a reason to exempt him may then teach a reason to find him liable. In cases of capital law, one who initially teaches a reason to find him liable may then teach a reason to acquit, but one who initially teaches a reason to acquit may not return and teach a reason to find him liable. In cases of monetary law, the court judges during the daytime, and may conclude the deliberations and issue the ruling even at night. In cases of capital law, the court judges during the daytime, and concludes the deliberations and issues the ruling only in the daytime. In cases of monetary law, the court may conclude the deliberations and issue the ruling even on that same day, whether to exempt the accused or to find him liable. In cases of capital law, the court may conclude the deliberations and issue the ruling even on that same day to acquit the accused, but must wait until the following day to find him liable. Therefore, since capital cases might continue for two days, the court does not judge cases of capital law on certain days, neither on the eve of Shabbat nor the eve of a Festival.

(2) In cases of monetary law, and likewise in the cases of ritual impurity and purity, the judges commence expressing their opinions from the greatest of the judges. In cases of capital law, the judges commence issuing their opinions from the side, where the least significant judges sit. All are fit to judge cases of monetary law. But not all are fit to judge cases of capital law; only priests, Levites, and Israelites who are of sufficiently fit lineage to marry their daughters to members of the priesthood are fit to judge cases of capital law.

(3) A Sanhedrin of twenty-three was arranged in the same layout as half of a circular threshing floor, in order that all the judges will see one another and the witnesses. And two judges’ scribes stand before the court, one on the right and one on the left, and they write the statements of those who find the accused liable and the statements of those who acquit the accused. Rabbi Yehuda says: There were three scribes. One writes only the statements of those who acquit the accused, one writes only the statements of those who find him liable, and the third writes both the statements of those who acquit the accused and the statements of those who find him liable, so that if there is uncertainty concerning the precise wording that one of the scribes writes, it can be compared to the words of the third scribe.

(4) And three rows of Torah scholars sit before the judges, and each and every one among those sitting recognizes his place, i.e., they are seated in accordance with their stature. When the court must ordain an additional judge, e.g., if a judge dies during the proceedings or in the case of a court without a decisive majority (see 40a), the court ordains the greatest Torah scholar from the first row. As a seat in the first row is now vacant, one Torah scholar from the second row comes to the first row, and one Torah scholar from the third row comes to the second row, and the court selects another Torah scholar from among the assembled and they seat him in the third row. And this Torah scholar who moves from the second row to the first row would not sit in the place of the first Torah scholar, who joined the court, rather, he would sit in the place appropriate for him, i.e., at the end of that row, in accordance with his stature.

(5) How does the court intimidate the witnesses in giving testimony for cases of capital law? They would bring the witnesses in and intimidate them by saying to them: Perhaps what you say in your testimony is based on conjecture, or perhaps it is based on a rumor, perhaps it is testimony based on hearsay, e.g., you heard a witness testify to this in a different court, or perhaps it is based on the statement of a trusted person. Perhaps you do not know that ultimately we examine you with inquiry and interrogation, and if you are lying, your lie will be discovered. The court tells them: You should know that cases of capital law are not like cases of monetary law. In cases of monetary law, a person who testifies falsely, causing money to be given to the wrong party, can give the money to the proper owner and his sin is atoned for. In cases of capital law, if one testifies falsely, the blood of the accused and the blood of his offspring that he did not merit to produce are ascribed to the witness’s testimony until eternity. The proof for this is as we found with Cain, who killed his brother, as it is stated concerning him: “The voice of your brother’s blood [demei] cries out to Me from the ground” (Genesis 4:10). The verse does not state: Your brother’s blood [dam], in the singular, but rather: “Your brother’s blood [demei],” in the plural. This serves to teach that the loss of both his brother’s blood and the blood of his brother’s offspring are ascribed to Cain. The mishna notes: Alternatively, the phrase “your brother’s blood [demei],” written in the plural, teaches that that his blood was not gathered in one place but was splattered on the trees and on the stones. The court tells the witnesses: Therefore, Adam the first man was created alone, to teach you that with regard to anyone who destroys one soul from the Jewish people, i.e., kills one Jew, the verse ascribes him blame as if he destroyed an entire world, as Adam was one person, from whom the population of an entire world came forth. And conversely, anyone who sustains one soul from the Jewish people, the verse ascribes him credit as if he sustained an entire world. The mishna cites another reason Adam the first man was created alone: And this was done due to the importance of maintaining peace among people, so that one person will not say to another: My father, i.e., progenitor, is greater than your father. And it was also so that the heretics who believe in multiple gods will not say: There are many authorities in Heaven, and each created a different person. And this serves to tell of the greatness of the Holy One, Blessed be He, as when a person stamps several coins with one seal, they are all similar to each other. But the supreme King of kings, the Holy One, Blessed be He, stamped all people with the seal of Adam the first man, as all of them are his offspring, and not one of them is similar to another. Therefore, since all humanity descends from one person, each and every person is obligated to say: The world was created for me, as one person can be the source of all humanity, and recognize the significance of his actions. The court says to the witnesses: And perhaps you will say: Why would we want this trouble? Perhaps it would be better not to testify at all. But be aware, as is it not already stated: “And he being a witness, whether he has seen or known, if he does not utter it, then he shall bear his iniquity” (Leviticus 5:1)? It is a transgression not to testify when one can do so. And perhaps you will say: Why would we want to be responsible for the blood of this person? But be aware, as is it not already stated: “When the wicked perish, there is song” (Proverbs 11:10)?

(טו) לֹֽא־יָקוּם֩ עֵ֨ד אֶחָ֜ד בְּאִ֗ישׁ לְכׇל־עָוֺן֙ וּלְכׇל־חַטָּ֔את בְּכׇל־חֵ֖טְא אֲשֶׁ֣ר יֶֽחֱטָ֑א עַל־פִּ֣י ׀ שְׁנֵ֣י עֵדִ֗ים א֛וֹ עַל־פִּ֥י שְׁלֹשָֽׁה־עֵדִ֖ים יָק֥וּם דָּבָֽר׃
(15) A single witness may not validate against an [accused] party any guilt or blame for any offense that may be committed; a case can be valid only on the testimony of two witnesses or more.*more See note at 17.6.
עֲשָׂרָה מִינֵי פַּסְלוּת הֵם כָּל מִי שֶׁנִּמְצָא בּוֹ אֶחָד מֵהֶן הֲרֵי הוּא פָּסוּל לְעֵדוּת. וְאֵלּוּ הֵן. הַנָּשִׁים. וְהָעֲבָדִים. וְהַקְּטַנִּים. וְהַשּׁוֹטִים. וְהַחֵרְשִׁים. וְהַסּוּמִים. וְהָרְשָׁעִים. וְהַבְּזוּיִין. וְהַקְּרוֹבִין. וְהַנּוֹגְעִין בְּעֵדוּתָן. הֲרֵי אֵלּוּ עֲשָׂרָה:
There are ten categories of disqualifications. Any person belonging to one of them is not acceptable as a witness. They are:
a) women;
b) servants;
c) minors;
d) mentally or emotionally unstable individuals;
e) deaf-mutes;
f) the blind;
g) the wicked; h) debased individuals;
i) relatives;
j) people who have a vested interest in the matter; a total of ten.
(טז) לֹֽא־יוּמְת֤וּ אָבוֹת֙ עַל־בָּנִ֔ים וּבָנִ֖ים לֹא־יוּמְת֣וּ עַל־אָב֑וֹת אִ֥ישׁ בְּחֶטְא֖וֹ יוּמָֽתוּ׃ {ס}
(16) Parents shall not be put to death for children, nor children be put to death for parents: they shall each be put to death only for their own crime.
כָּל עֵדוּת שֶׁתָּבוֹא הֲנָאָה לְאָדָם מִמֶּנָּה אֵינוֹ מֵעִיד בָּהּ שֶׁזֶּה הוּא כְּמֵעִיד עַל עַצְמוֹ. לְפִיכָךְ בְּנֵי הָעִיר שֶׁבָּא מְעַרְעֵר לְעַרְעֵר עֲלֵיהֶם בַּמֶּרְחָץ אוֹ בִּרְחוֹב שֶׁל עִיר. אֵין אֶחָד מִבַּעֲלֵי הָעִיר מֵעִיד בְּדָבָר זֶה וְלֹא דָּן עַד שֶׁיְּסַלֵּק עַצְמוֹ בְּקִנְיָן גָּמוּר וְאַחַר כָּךְ יָעִיד אוֹ יָדִין:
Whenever a person will benefit from giving testimony, he may not give such testimony for it is as if he is testifying concerning himself. Therefore when a person comes to the inhabitants of a city with a complaint concerning the public bathhouse or thoroughfare, none of the inhabitants of the city can testify regarding this matter nor serve as a judge regarding this matter until they undertake a contractual act removing themselves from any connection to the property in question. Afterwards, they may testify or serve as a judge.
בְּנֵי הָעִיר שֶׁנִּגְנַב סֵפֶר תּוֹרָה שֶׁלָּהֶן הוֹאִיל וְלִשְׁמִיעָה הוּא עָשׂוּי שֶׁאִי אֶפְשָׁר לְאָדָם לְסַלֵּק עַצְמוֹ מִמֶּנּוּ אֵין דָּנִין בְּדַיָּנֵי אוֹתָהּ הָעִיר וְאֵין מְבִיאִין רְאָיָה מֵאַנְשֵׁי אוֹתָהּ הָעִיר. וְכֵן כָּל כַּיּוֹצֵא בָּזֶה:
The following rules apply when a communal Torah scroll is stolen from the inhabitants of a city. Since it is intended to be listened to by all the members of the community, it is impossible for a person to withdraw his share of ownership from it. Hence, the matter should not be adjudicated by the judges of the city, and the inhabitants of the city may not testify to prove the city's ownership. Similar laws apply in all analogous situations.
עדים הקרובים לערב פסולים ללוה לא שנא אם הלוה בא ליפטר בטענת כפירה והם מעידים עליו שלוה או אם טוען שפרע והם מעידים עליו שהודה שלא פרע: הגה קרובי נרצח יכולין להעיד על הרוצח (הגהות אשירי ומרדכי פ' זה בורר) וכן קרובי המוכה יכולין להעיד על המכה לגרשו מב"ה או שאר עונש דומה לזה שאין תועלת למוכה בעדותו (הגהות מרדכי שם):
16- Witnesses that are related to a cosigner are disqualified from testifying for the borrower, whether the borrower wanted to exempt himself by denying the loan and they will testify that he did borrow the money or if the borrower claims he paid back and they will testify that the borrower confessed that he did not pay back. RAMA: The relatives of a murder victim can testify against the murderer. (Hagahos Ashiri; Mordechai). Similarly, the relatives of an assault victim can testify against the perpetrator to force him out of the synagogue or some other similar punishment because there is no gain for the victim in such a testimony.
כל היכא דהשתא אינו נוגע בעדות אע"פ שאם יתעשר יהנה בעדותו כשר להעיד:
10. Testimony is valid in a situation where in his current state the witness gains no benefit from his testimony but if he were to become rich then he would gain benefit.
(א) וְנֶ֣פֶשׁ כִּֽי־תֶחֱטָ֗א וְשָֽׁמְעָה֙ ק֣וֹל אָלָ֔ה וְה֣וּא עֵ֔ד א֥וֹ רָאָ֖ה א֣וֹ יָדָ֑ע אִם־ל֥וֹא יַגִּ֖יד וְנָשָׂ֥א עֲוֺנֽוֹ׃
(1) If a person incurs guilt—When one has heard a public imprecation*imprecation Namely, against one who withholds testimony. but (although able to testify as having either seen or learned of the matter) has not given information and thus is subject to punishment;
COMPETENCY - from section on Jewish Virtual Library dealing with witnesses
In any case of hearing testimony, courts operating on the basis of Jewish law are required to determine the competency of the witnesses, and in many cases are unable to accept the testimony of incompetent witnesses. Nonetheless, one of the foremost rabbinical judges, who subsequently served as chief rabbi of Israel, stressed that
"It goes without saying that the bet din is authorized to hear the truth from any person, in any form, to form an impression. Even where the witnesses are incompetent under halakhic principles, their testimony may aid them in drawing conclusions based on common sense presumptions (umdana) or as proof of an objective reality. In many cases, the court is empowered to use its discretion to rule in reliance on other forms of proof and common sense conclusions, even in the absence of valid testimony." (Rav A. Bakshi-Doron, “Kabbalat Edim be-Bet ha-Din,” in: Torah she-be-al Peh, 22 (1981), 81–88, 84).
A comprehensive study by Hayyim Hefetz dealt with the status of circumstantial evidence (Hefetz, Ra’ayot Nesibatiot; on matters of evidence and presumption, see *Evidence ). The difference between testimony proffered by competent witnesses as opposed to that of incompetent witnesses has been explained by one scholar (Ettinger, The Role of Witnesses) as being based on a fundamental distinction between testimony and credibility. This distinction is manifested in the willingness to accept testimony of incompetent witnesses (such as testimony for an agunah, that her husband died), even though they are not considered as “witnesses” in the formal sense, though their testimony is relied upon.
THE INTERESTED PARTY - from section on Jewish Virtual Library dealing with witnesses
A fascinating question that arose in modern times relates to the status in Jewish law of a witness who turns state’s evidence (i.e., one offered immunity from punishment for his own crimes in return for testifying against another criminal). The various problems posed by a conviction resting on the testimony of a person who turned state’s evidence is a classic example of the “interested party” and of one who “receives benefit for testifying.” All of these issues are dealt with in a comprehensive study (E. Shochetman, Eduto shel Ed Medinah le-Or ha-Mishpat ha-Ivri). In terms of being “an interested party,” the author argues that such a person should be disqualified as witness, because the consideration given him for his testimony is given by one party (the prosecution – District/State attorney), because he is under pressure for his testimony to be consistent with that given to the police during his preliminary interrogation, and because it must conform with the prosecutor’s anticipations. Another problem is the granting of immunity against criminal prosecution in return for giving testimony, which constitutes the granting of benefit to the witness in return for his testimony. This is in direct contravention of the commandment to give evidence gratuitously, and under Mishnaic law, such testimony is invalid (Mishnah, Bekhorot, 4:6). The halakhah in this matter is in accordance with the view of Rema (ḤM 34:18). On this basis, the author concludes that even in terms of the law of “he who receives benefit for testifying,” the state’s witness should be disqualified. On the other hand, Shochetman suggests that the institute of “states evidence” might be validated by the enactment of a regulation allowing the court discretionary power to deviate from regular laws of evidence, in an attempt to provide a halakhic solution for situations in which an offender whose guilt is clear may still escape punishment altogether.
לֹֽא־תִהְיֶ֥ה אַחֲרֵֽי־רַבִּ֖ים לְרָעֹ֑ת וְלֹא־תַעֲנֶ֣ה עַל־רִ֗ב לִנְטֹ֛ת אַחֲרֵ֥י רַבִּ֖ים לְהַטֹּֽת׃
You shall neither side with the mighty to do wrong—you shall not give perverse testimony in a dispute so as to pervert it in favor of the mighty—
Rashi on Exodus 23:2
The Hebrew text is to be explained according to the Targum as follows: לא תענה על רב לנטת If you are being asked your opinion in a legal matter do not give your answer just to incline to one particular side and so to withdraw yourself from the dispute, but decide the matter as truth requires. Such are the expositions that have been offered of this verse...
ולא תענה על רב לנטת וגו׳, and if the defendant asks you about that judgment do not give him as a reply concerning the dispute any statement which will incline after that majority, thereby wresting judgment from the truth, but pronounce the decision just as it should be and let the collar hang around the neck of the majority (i. e. if you be outvoted let them bear the responsibility).
(יח) שֹׁפְטִ֣ים וְשֹֽׁטְרִ֗ים תִּֽתֶּן־לְךָ֙ בְּכׇל־שְׁעָרֶ֔יךָ אֲשֶׁ֨ר יְהֹוָ֧ה אֱלֹהֶ֛יךָ נֹתֵ֥ן לְךָ֖ לִשְׁבָטֶ֑יךָ וְשָׁפְט֥וּ אֶת־הָעָ֖ם מִשְׁפַּט־צֶֽדֶק׃ (יט) לֹא־תַטֶּ֣ה מִשְׁפָּ֔ט לֹ֥א תַכִּ֖יר פָּנִ֑ים וְלֹא־תִקַּ֣ח שֹׁ֔חַד כִּ֣י הַשֹּׁ֗חַד יְעַוֵּר֙ עֵינֵ֣י חֲכָמִ֔ים וִֽיסַלֵּ֖ף דִּבְרֵ֥י צַדִּיקִֽם׃ (כ) צֶ֥דֶק צֶ֖דֶק תִּרְדֹּ֑ף לְמַ֤עַן תִּֽחְיֶה֙ וְיָרַשְׁתָּ֣ אֶת־הָאָ֔רֶץ אֲשֶׁר־יְהֹוָ֥ה אֱלֹהֶ֖יךָ נֹתֵ֥ן לָֽךְ׃ {ס}
(18) You shall appoint magistrates and officials for your tribes, in all the settlements that your God יהוה is giving you, and they shall govern the people with due justice. (19) You shall not judge unfairly: you shall show no partiality; you shall not take bribes, for bribes blind the eyes of the discerning and upset the plea of the just. (20) Justice, justice shall you pursue, that you may thrive and occupy the land that your God יהוה is giving you.
צדק צדק תרדף. הַלֹּךְ אַחַר בֵּית דִּין יָפֶה (ספרי; סנהדרין ל"ב):
צדק צדק תרדף JUSTICE, JUSTICE SHALT THOU PURSUE — go to (search after) a reliable court (Sifrei Devarim 144:14; Sanhedrin 32b).
למען תחיה וירשת. כְּדַאי הוּא מִנּוּי הַדַּיָּנִין הַכְּשֵׁרִים לְהַחֲיוֹת אֶת יִשְׂרָאֵל וּלְהוֹשִׁיבָן עַל אַדְמָתָן (ספרי):
למען תחיה וירשת [JUSTICE, JUSTICE SHALT THOU PURSUE] THAT THOU MAYEST LIVE, AND INHERIT [THE LAND WHICH THE LORD THY GOD GIVETH THEE] — The appointment of honest judges is sufficient merit to keep Israel in life and to settle them in security in their land (Sifrei Devarim 144:15).
Additional Sources
Beit Din - https://www.myjewishlearning.com/article/the-beit-din/
Jewish Courts
3 people - civil matters, conversion, divorce (Mishna Sanhedrin chapter 1)
23 people - criminal matters (Mishna Sanhedrin chapter 1)
71 people - known as the Sanhedrin, this was the highest court, certain types of cases reserved for it alone (Mishna Sanhedrin chapter 1)

... כׇּל מָקוֹם שֶׁיַּעַמְדוּ שְׁנַיִם וְיֹאמְרוּ: ״מְעִידִים אָנוּ בְּאִישׁ פְּלוֹנִי שֶׁנִּגְמַר דִּינוֹ בְּבֵית דִּין שֶׁל פְּלוֹנִי, וּפְלוֹנִי וּפְלוֹנִי עֵדָיו״ – הֲרֵי זֶה יֵהָרֵג. סַנְהֶדְרִין נוֹהֶגֶת בָּאָרֶץ וּבְחוּצָה לָאָרֶץ. סַנְהֶדְרִין הַהוֹרֶגֶת אֶחָד בְּשָׁבוּעַ נִקְרֵאת חוֹבְלָנִית. רַבִּי אֱלִיעֶזֶר בֶּן עֲזַרְיָה אוֹמֵר: אֶחָד לְשִׁבְעִים שָׁנָה. רַבִּי טַרְפוֹן וְרַבִּי עֲקִיבָא אוֹמְרִים: אִילּוּ הָיִינוּ בְּסַנְהֶדְרִין לֹא נֶהֱרַג אָדָם מֵעוֹלָם. רַבָּן שִׁמְעוֹן בֶּן גַּמְלִיאֵל אוֹמֵר: אַף הֵן מַרְבִּין שׁוֹפְכֵי דָּמִים בְּיִשְׂרָאֵל...

...Consequently, in any place where two witnesses will stand and say: We testify with regard to a man called so-and-so that his verdict was delivered and he was sentenced to death in the court of so-and-so, and so-and-so and so-and-so were his witnesses, that person shall be executed on the basis of that testimony. The mishna continues: The mitzva to establish a Sanhedrin with the authority to administer capital punishments is in effect both in Eretz Yisrael and outside Eretz Yisrael. A Sanhedrin that executes a transgressor once in seven years is characterized as a destructive tribunal. Since the Sanhedrin would subject the testimony to exacting scrutiny, it was extremely rare for a defendant to be executed. Rabbi Elazar ben Azarya says: This categorization applies to a Sanhedrin that executes a transgressor once in seventy years. Rabbi Tarfon and Rabbi Akiva say: If we had been members of the Sanhedrin, we would have conducted trials in a manner whereby no person would have ever been executed. Rabban Shimon ben Gamliel says: In adopting that approach, they too would increase the number of murderers among the Jewish people. The death penalty would lose its deterrent value, as all potential murderers would know that no one is ever executed...