וַיִּתְפַּלֵּ֥ל אַבְרָהָ֖ם אֶל־הָאֱלֹהִ֑ים וַיִּרְפָּ֨א אֱלֹהִ֜ים אֶת־אֲבִימֶ֧לֶךְ וְאֶת־אִשְׁתּ֛וֹ וְאַמְהֹתָ֖יו וַיֵּלֵֽדוּ׃
И Авраам молился Богу; и исцелил Бог Авимелеха, и его жену, и служанок его; и они родили детей.
Mishneh Torah, Human Dispositions
If one man commit a sin against another man, the one sinned against shall not remain in silent hate against the sinner, as it is said of the wicked: "And Absalom spoke unto Amnon neither good nor bad; for Absalom hated Amnon" (Second Samuel. 13.22); but, on the contrary, it is obligatory upon him to make known to him and say unto him: "Why have you done to me thus and such, and wherefore have you sinned against me in that particular matter?"; for, it is said: "And thou shalt indeed rebuke thy neighbor" (Lev. 19.17). And, if the sinner did repent and begged to be forgiven by him, he must forgive him; and in doing so he should not be cruel, for it is said: "And Abraham prayed unto God" (Gen. 20.17).6For Abimelech, who sinned against him. G.
Kitzur Shulchan Arukh
Anyone who hates a fellow-Jew in his heart, transgresses a negative commandment, as it is said: "Do not hate your brother in your heart."40Leviticus 19:17. (See Chapter 189: 5) If anyone has sinned against you, you should not hate him inwardly, and keep quiet about it, as it is written concerning the wicked, "And Avshalom did not speak to Amnon either bad or good because Avshalom hated Amnon,"41II Samuel 13:22. but it is your duty to let him know [what you think of him] and to say to him,42You should not denounce him publicly and thereby embarrass him, rather chide him in private in a calm and gentle tone of voice. (Mishnah Berurah 156:4). "Why have you done this to me, why have you sinned against me in this matter?", for it is said: "You must admonish your neighbor."43Leviticus 19:17. If the offender regrets it and asks you to forgive him, you should forgive him and not be harsh, for it is said:44Genesis 20:17. "And Avraham prayed to God."45Asking God to heal Avimelech. Avimelech had taken away Sarah, but returned her to Avraham, expressing sincere remorse. In Avos de Rabbi Nasan (end of Chapter 16) [it is stated] "What is meant by 'hatred of people'?" It conveys this thought: "A person should not think of saying "I will love the scholars but hate the students, I will love the students but hate the unlearned." Rather, you should love them all, but hate the heretics, and those who mislead and entice people, [to abandon the Torah and follow false doctrines], and also [hate] the informers. And thus David said,46Psalms 139:22. "Behold, those who hate You Hashem, I hate, and with those who rise up against You, I contend. With utmost hatred do I hate them, they have come to be my enemies." But didn't God say; "Love your neighbor as [you love] yourself, I am Hashem?" For what reason? Because I (God) have created him. And if he keeps the laws of your people you must love him, if not, you should not love him.