(7) If your brother, your own mother’s son,*your own mother’s son Samaritan reads, “the son of your father or the son of your mother.” or your son or daughter, or the wife of your bosom, or your closest friend*closest friend Lit. “friend who is as yourself.”

And he said, "acquire for yourself a friend". He said it with an expression of acquisition and he did not say, "Make for yourself a friend," or "Befriend others." The intention of this is that a person must acquire a friend for himself, so that all of his deeds and all of his matters be refined through him, as they said (Taanit 23a), "Either a friend or death." And if he does not find him, he must make efforts for it with all his heart, and even if he must lead him to his friendship, until he becomes a friend. And [then] he must never let off from following [his friend's] will, until his friendship is firmed up. [It is] as the masters of ethics say, "When you love, do not love according to your traits; but rather love according to the trait of your friend." And when each of the friends has the intention to fulfill the will of his friend, the intention of both of them will be one without a doubt. And how good is the statement of Aristotle, "The friend is one."

And there are three types of friends: a friend for benefit, a friend for enjoyment and a friend for virtue. Indeed, a friend for benefit is like the friendship of two [business] partners and the friendship of a king and his retinue; whereas the friendship for enjoyment is of two types - the friend for pleasure and the friend for confidence. Indeed, the friend for pleasure is like the friendship of males and females and similar to it; whereas the friend for confidence is when a man has a friend to whom he can confide his soul. He will not keep [anything] from him - not in action and not in speech. And he will make him know all of his affairs - the good ones and the disgraceful - without fearing from him that any loss will come to him with all of this, not from him and not from another. As when a person has such a level of confidence in a man, he finds great enjoyment in his words and in his great friendship. And a friend for virtue is when the desire of both of them and their intention is for one thing, and that is the good. And each one wants to be helped by his friend in reaching this good for both of them together. And this is the friend which he commanded to acquire; and it is like the love of the master for the student and of the student for the master.

“Abraham said: I will swear” (Genesis 21:24).
“Abraham reprimanded Avimelekh regarding the well of water that Avimelekh's servants had stolen” (Genesis 21:25).
“Abraham reprimanded Avimelekh…” – Rabbi Yosei bar Ḥanina said: Reprimand leads to love, as it is stated: “Rebuke a wise person, and he will love you” (Proverbs 9:8). This is consistent with [another] opinion of Rabbi Yosei bar Ḥanina, as he said: Any love that is not accompanied by reprimand is not [true] love.
Reish Lakish said: Reprimand leads to peace – “Abraham reprimanded Avimelekh.” This is consistent with [another] opinion of his, as he said: Any peace that is not accompanied by reprimand is not [true] peace.

He said to him--That which is hateful to you do not do to another.