1 Corinthians 5
I am shocked and sad to hear that there are cases of incest amongst your church members and you are not confronting them about it, but rather accepting of it. Jesus Christ does not tolerate this kind of act.
Even people who are unbelievers do not accept such behavior, let alone, Jesus-following Christians.
Sadly, your church is also full of boasting and pride. Even a little of this is dangerous. Just like yeast in bread, this spirit of pride will spread through your whole church congration.
When people claim to be believers in the Lord Jesus Christ, yet are sexually immoral or who get drunk or speak badly about other people or worship idols, don’t spend time with these people, lest their attitude and actions tempts you to do the same.