1 Corinthians 5:1, 2, 5-7, 9-12

I can hardly believe the report about the sexual immorality going on among you—something that even pagans don’t do. I am told that a man in your church is living in sin with his stepmother. You are so proud of yourselves, but you should be mourning in sorrow and shame. And you should remove this man from your fellowship. Then you must throw this man out and hand him over to Satan so that his sinful nature will be destroyed and he himself will be saved on the day the Lord returns. Your boasting about this is terrible. Don’t you realize that this sin is like a little yeast that spreads through the whole batch of dough? Get rid of the old “yeast” by removing this wicked person from among you. Then you will be like a fresh batch of dough made without yeast, which is what you really are. Christ, our Passover Lamb, has been sacrificed for us. When I wrote to you before, I told you not to associate with people who indulge in sexual sin. But I wasn’t talking about unbelievers who indulge in sexual sin, or are greedy, or cheat people, or worship idols. You would have to leave this world to avoid people like that. I meant that you are not to associate with anyone who claims to be a believer yet indulges in sexual sin, or is greedy, or worships idols, or is abusive, or is a drunkard, or cheats people. Don’t even eat with such people. It isn’t my responsibility to judge outsiders, but it certainly is your responsibility to judge those inside the church who are sinning.
(1 Corinthians 5:1, 2, 5-7, 9-12 NLT)