1 Corinthians 5
12 What business is it of mine to judge those outside the church? Are you not to judge those inside? 13 God will judge those outside. "Expel the wicked man from among you.

1 Corinthians 6
1If any of you has a dispute with another, dare he take it before the ungodly for judgment instead of before the saints? 2 Do you not know that the saints will judge the world? And if you are to judge the world, are you not competent to judge trivial cases? 3 Do you not know that we will judge angels? How much more the things of this life! 4 Therefore, if you have disputes about such matters, appoint as judges even men of little account in the church! 5 I say this to shame you. Is it possible that there is nobody among you wise enough to judge a dispute between believers?