'Resentment' in the Bible

“Do not judge [others self-righteously], and you will not be judged; do not condemn [others when you are guilty and unrepentant], and you will not be condemned [for your hypocrisy]; pardon [others when they truly repent and change], and you will be pardoned [when you truly repent and change].

Even if he sins against you seven times a day, and returns to you seven times and says, ‘I repent,’ you must forgive him [that is, give up resentment and consider the offense recalled and annulled].”