Cross reference
Matthew 18:21
21 Then Peter came and said to him, "Lord, how often shall my brother sin against me, and I forgive him? Until seven times?"
Luke 17:3-4
3 Be careful. If your brother sins against you, rebuke him. If he repents, forgive him.
4 If he sins against you seven times in the day, and seven times returns, saying, 'I repent,' you shall forgive him."
Matthew 18:15
15 "If your brother sins against you, go, show him his fault between you and him alone. If he listens to you, you have gained back your brother.