Matthew 18:17-18

And if he refuses to listen, then share the issue with the congregation in hopes of restoration. If he still refuses to respond, even to the church, then you must disregard him as though he were an outsider, on the same level as an unrepentant sinner. “Receive this truth: Whatever you forbid on earth will be considered to be forbidden in heaven, and whatever you release on earth will be considered to be released in heaven.