'Judge' in the Bible

But it is a small thing to me that I am judged by you or by man's judging; I am not even a judge of myself.

For I am not conscious of any wrong in myself; but this does not make me clear, for it is the Lord who is my judge.

As for those who are outside, God is their judge. So put away the evil man from among you.

How is it, that if any one of you has a cause at law against another, he takes it before a Gentile judge and not before the saints?