Matthew 18:15-17

Verse

15 If your brother sins against you, go and confront him privately. If he listens to you, you have won your brother over. 16 But if he will not listen, take one or two others along, so that ‘every matter may be established by the testimony of two or three witnesses.’ 17 If he refuses to listen to them, tell it to the church. And if he refuses to listen even to the church, regard him as you would a pagan or a tax collector. (BSB)