1 Corinthians 6:5-8

I say this to shame you. Surely there is someone among you wise enough to judge a complaint between believers. But now one believer goes to court against another believer—and you do this in front of unbelievers! The fact that you have lawsuits against each other shows that you are already defeated. Why not let yourselves be wronged? Why not let yourselves be cheated? But you yourselves do wrong and cheat, and you do this to other believers!