Deuteronomy 1:17

Respect persons Hebrew, not know, or acknowledge faces; that is, not give sentence according to the outward qualities of the person, as he is poor or rich, your friend or enemy, but purely according to the merit of the cause. For which reason some of the Grecian lawgivers ordered that the judges should give sentence in the dark, where they could not see men's faces. The judgment is God's It is passed in the name of God, and by commission from him, by you, as representing his person, and doing his work; who therefore will defend you therein against all your enemies, and to whom you must give an exact account.