Forgiveness as a Spiritual Practice

(ו) הג'- ועובר על פשע - זוֹ מִדָּה גְּדוֹלָה שֶׁהֲרֵי אֵין הַמְּחִילָה עַל יְדֵי שָׁלִיחַ אֶלָּא עַל יָדוֹ מַמָּשׁ שֶׁל הַקָּדוֹשׁ בָּרוּךְ הוּא כְּדִכְתִיב (תהלים קל, ד) כִּי עִמְּךָ הַסְּלִיחָה וְגוֹ' וּמַה הִיא הַסְּלִיחָה שֶׁהוּא רוֹחֵץ הֶעָוֹן כְּדִכְתִיב (ישעיה ד, ד) אִם רָחַץ אדושם אֵת צֹאַת בְּנוֹת צִיּוֹן וְגוֹ׳ וְכֵן כְּתִיב (יחזקאל לו, כה) וְזָרַקְתִּי עֲלֵיכֶם מַיִם טְהוֹרִים וְגוֹ' וְהַיְנוּ וְעוֹבֵר עַל פֶּשַׁע שׁוֹלֵחַ מֵימֵי רְחִיצָה וְעוֹבֵד וְרוֹחֵץ הַפֶּשַׁע.

(6) The third: "And passes over transgression" - this is a great trait. As behold, the pardon is not through an emissary but rather actually through the Holy One, blessed be He - as it is written (Psalm 130:4), "For with You is forgiveness, etc." And what is that forgiveness? That He washes away the transgression, as it is written (Isaiah 4:4), "When the Lord will have washed away the filth of the daughters of Zion, etc." And so [too,] is it written (Ezekiel 36:25), "I will sprinkle upon you pure waters, etc." And this is [the meaning of] "and passes over transgression" - He sends forth waters of washing, and He passes and washes [away] the transgression.

(יח) לֹֽא־תִקֹּ֤ם וְלֹֽא־תִטֹּר֙ אֶת־בְּנֵ֣י עַמֶּ֔ךָ וְאָֽהַבְתָּ֥ לְרֵעֲךָ֖ כָּמ֑וֹךָ אֲנִ֖י ה'׃

You shall not take vengeance or bear a grudge against members of your people. Love your fellow as yourself: I am Hashem.

(א) לא תקם. אָמַר לוֹ הַשְׁאִילֵנִי מַגָּלְךָ, אָמַר לוֹ לָאו, לְמָחָר אָמַר לוֹ הַשְׁאִילֵנִי קַרְדֻּמְּךָ, אָמַר לוֹ אֵינִי מַשְׁאִילְךָ כְּדֶרֶךְ שֶׁלֹּא הִשְׁאַלְתַּנִי, זוֹ הִיא נְקִימָה; וְאֵיזוֹ הִיא נְטִירָה? אָמַר לוֹ הַשְׁאִילֵנִי אֶת קַרְדֻּמְּךָ, אָמַר לוֹ לָאו, לְמָחָר אָמַר לוֹ הַשְׁאִילֵנִי מַגָּלְךָ, אָמַר לוֹ הֵא לְךָ, אֵינִי כְמוֹתְךָ שֶׁלֹּא הִשְׁאַלְתַּנִי, זוֹ הִיא נְטִירָה, שֶׁנּוֹטֵר הָאֵיבָה בְּלִבּוֹ, אַעַ"פִּי שֶׁאֵינוֹ נוֹקֵם (ספרא; יומא כ"ג):
(1) לא תקם THOU SHALT NOT AVENGE — If one says to another “Lend me your sickle", and he replies, “No!", and the next day he (the latter) says to him (the former), “Lend me your hatchet”, and he retorts, “I am not going to lend it to you, just as you refused to lend me your sickle״ — this is avenging. And what is “bearing a grudge”? If one says to another, “Lend me your hatchet”, and he replies “No!” and on the next day he says to him “Lend me your sickle”, and he replies: “Here it is; I am not like you, because you would not lend me” — this is called “bearing a grudge (נטירה)” because he retains (נוטר) enmity in his heart although he does not actually avenge himself (Sifra, Kedoshim, Chapter 4 10-11; Yoma 23a).