1 Corinthians 11:18
For in the first place, I hear that when you gather as a church there are divisions among you, and I partly believe it.
1 Corinthians 3:3
That's because you are still worldly. As long as there is jealousy and quarreling among you, you are worldly and living by human standards, aren't you?
1 Corinthians 1:10-12
Brothers, in the name of our Lord Jesus the Messiah, I urge all of you to be in agreement and not to have divisions among you, so that you may be perfectly united in your understanding and opinions.
1 Corinthians 5:1
It is actually reported that sexual immorality exists among you, and of a kind that is not found even among the gentiles. A man is actually living with his father's wife!
1 Corinthians 6:1
When one of you has a complaint against another, does he dare to take the matter before those who are unrighteous and not before the saints?