You should expel the man in your congregation who has acted so immorally.

1 Corinthians 5:1-5

5 Now I want to discuss another matter. It has been {People have} reported to me, and I believe that it is true, that some people among you have been acting in a sexually immoral way, in a way that is so bad that not even ◄pagans/people who do not know about God► act that way. People tell me that a man is living with his stepmother (OR, his father’s other wife). 2 You should be sad about what that man is doing! He should have been expelled {You should have expelled him} from your congregation! But you have not done that, so ◄how can you be proud, thinking that you are spiritually mature?/it is disgusting that you are proud, thinking that you are spiritually mature!► [RHQ] 3 As for me, I have already decided how you should punish that man. And even though I am away from you, my spirit is with you, and you should do as I would do if I were there with you. 4 What I have decided is that when you have gathered together with the authority [MTY] of our Lord Jesus, and my spirit is with you, and the power of our Lord Jesus is with you, 5 you should hand that man over to Satan. Then Satan can injure/punish his body, in order that he will turn away from his sinful behavior and his spirit will be saved on the day when the Lord returns [MTY].