1 Corinthians 6:4-8

So if you have law courts dealing with matters of this life, do you appoint them as judges who are of no account in the church?

I say this to your shame. Is it so, that there is not among you anyone wise who will be able to decide between his brothers and sisters,

but brother goes to law with brother, and that before unbelievers?

Actually, then, it is already a defeat for you, that you have lawsuits with one another. Why not rather suffer the wrong? Why not rather be defrauded?

On the contrary, you yourselves do wrong and defraud. And this to your brothers and sisters!