17 Do not repay anyone evil for evil. Be careful to do what is right in the eyes of everyone. 18 If it is possible, as far as it depends on you, live at peace with everyone. 19 Do not take revenge, my dear friends, but leave room for God's wrath, for it is written: "It is mine to avenge; I will repay,"[d] says the Lord. 20 On the contrary:
"If your enemy is hungry, feed him;
if he is thirsty, give him something to drink.
In doing this, you will heap burning coals on his head."[e]
Romans 12:17-20 NIV
And even if he sins against you seven times in a day, and turns to you seven times and says, I repent [I am sorry], you must forgive him (give up resentment and consider the offense as recalled and annulled).
Luke 17:4 AMP
31Let all bitterness and indignation and wrath (passion, rage, bad temper) and resentment (anger, animosity) and quarreling (brawling, clamor, contention) and slander (evil-speaking, abusive or blasphemous language) be banished from you, with all malice (spite, ill will, or baseness of any kind). 32And become useful and helpful and kind to one another, tenderhearted (compassionate, understanding, loving-hearted), forgiving one another [readily and freely], as God in Christ forgave you.
Ephesians 4:31-32 AMP