Matthew 18:15-18

15“1If your brother sins2, go and 3show him his fault 4in private; if he listens to you, you have won your brother. 16But if he does not listen to you, take one or two more with you, so that 5by the mouth of two or three witnesses every 6fact may be confirmed. 17If he refuses to listen to them, 7tell it to the church; and if he refuses to listen even to the church, 8let him be to you as 9a Gentile and 10a tax collector. 18Truly I say to you, 11whatever you 12bind on earth 13shall have been bound in heaven; and whatever you 14loose on earth 15shall have been loosed in heaven.