If he refuses to listen to them, tell the church. If he refuses to listen even to the church, then treat him as you would a Gentile or a tax collector.
The Israelites who had returned from the exile and all those who had separated themselves from the uncleanness of the Gentiles in the land shared in it, seeking the Lord, the God of Israel.
so you shall know that I am the Lord, whose statutes you did not follow, whose ordinances you did not keep. Instead, you acted according to the ordinances of the nations around you.
The Son of Man came eating and drinking and they said, ‘Look, he is a glutton and a drunkard, a friend of tax collectors and sinners.’ But wisdom is vindicated by her works.” Reproaches to Unrepentant Towns.
The Pharisee took up his position and spoke this prayer to himself, ‘O God, I thank you that I am not like the rest of humanity—greedy, dishonest, adulterous—or even like this tax collector.
We instruct you, brothers, in the name of [our] Lord Jesus Christ, to shun any brother who conducts himself in a disorderly way and not according to the tradition they received from us.