Deuteronomy 16:18-19

Judges and officers shalt thou make thee in all thy gates, which Jehovah thy God giveth thee, according to thy tribes; and they shall judge the people with righteous judgment. Thou shalt not wrest justice: thou shalt not respect persons; neither shalt thou take a bribe; for a bribe doth blind the eyes of the wise, and pervert the words of the righteous.