1 Corinthians 5:9-13; 1 Corinthians 6:1-8
I wrote to you in my epistle not to keep company with sexually immoral people.
Yet I certainly did not mean with the sexually immoral people of this world, or with the covetous, or extortioners, or idolaters, since then you would need to go out of the world.
But now I have written to you not to keep company with anyone named a brother, who is sexually immoral, or covetous, or an idolater, or a reviler, or a drunkard, or an extortioner--not even to eat with such a person.
For what have I to do with judging those also who are outside? Do you not judge those who are inside?
But those who are outside God judges. Therefore "put away from yourselves the evil person."
Dare any of you, having a matter against another, go to law before the unrighteous, and not before the saints?
Do you not know that the saints will judge the world? And if the world will be judged by you, are you unworthy to judge the smallest matters?
Do you not know that we shall judge angels? How much more, things that pertain to this life?
If then you have judgments concerning things pertaining to this life, do you appoint those who are least esteemed by the church to judge?
I say this to your shame. Is it so, that there is not a wise man among you, not even one, who will be able to judge between his brethren?
But brother goes to law against brother, and that before unbelievers!
Now therefore, it is already an utter failure for you that you go to law against one another. Why do you not rather accept wrong? Why do you not rather let yourselves be cheated?
No, you yourselves do wrong and cheat, and you do these things to your brethren!