Deuteronomy 1:15-16

15So I took the leaders of your tribes, wise and experienced men, and made them leaders over you, commanders of thousands, and hundreds, and fifties, and tens, and officers (administrators) for your tribes.

16“Then I commanded your judges at that time, saying, ‘Hear the matters between your brothers [your fellow countrymen], and judge righteously and fairly between a man and his brother, or the stranger (resident alien, foreigner) who is with him.