1 Corinthians 6:4-7

Therefore, if you have disputes about such matters, do you ask for a ruling from those whose way of life is scorned in the church? I say this to shame you. Is it possible that there is nobody among you wise enough to judge a dispute between believers? But instead, one brother takes another to court—and this in front of unbelievers! The very fact that you have lawsuits among you means you have been completely defeated already. Why not rather be wronged? Why not rather be cheated?