Matthew 18 - ESV

If your brother sins against you, go and tell him his fault, between you and him alone. If he listens to you, you have gained your brother.
Matthew 18:15 sin speaking listening
If he refuses to listen to them, tell it to the church. And if he refuses to listen even to the church, let him be to you as a Gentile and a tax collector.
Matthew 18:17 church sin listening

For where two or three are gathered in my name, there am I among them.
Matthew 18:20 Jesus community prayer
Then Peter came up and said to him, “Lord, how often will my brother sin against me, and I forgive him? As many as seven times?” Jesus said to him, “I do not say to you seven times, but seventy-seven times.”
Matthew 18:21-22 forgiveness neighbor sin