Matthew 18:16-18

16But if he does not listen, take with you one or two more, so that ‘by the mouth of two or three witnesses every word may stand.’

17But if he refuses to listen to them, tell it to Messiah’s community. And if he refuses to listen even to Messiah’s community, let him be to you as a pagan and a tax collector.

18“Amen, I tell you, whatever you forbid on earth will have been forbidden in heaven and what you permit on earth will have been permitted in heaven.