'Judge' in the Bible

Do not say evil against one another, my brothers. He who says evil against his brother or makes himself his brother's judge, says evil against the law and is judging the law: and in judging the law you become, not a doer of the law but a judge.

There is only one judge and law-giver, even he who has the power of salvation and of destruction; but who are you to be your neighbour's judge?

Say no hard things against one another, brothers, so that you will not be judged; see, the judge is waiting at the doors.