1 Corinthians 6:1-3

When one of you has a dispute with another believer, how dare you file a lawsuit and ask a secular court to decide the matter instead of taking it to other believers! Don’t you realize that someday we believers will judge the world? And since you are going to judge the world, can’t you decide even these little things among yourselves? Don’t you realize that we will judge angels? So you should surely be able to resolve ordinary disputes in this life.