Deuteronomy 1:15

1:15 So I chose as your tribal leaders wise and well-known men, placing them over you as administrators of groups of thousands, hundreds, fifties, and tens, and also as other tribal officials.

Deuteronomy 16:18

Provision for Justice

16:18 You must appoint judges and civil servants for each tribe in all your villages that the Lord your God is giving you, and they must judge the people fairly.

Deuteronomy 31:28

31:28 Gather to me all your tribal elders and officials so I can speak to them directly about these things and call the heavens and the earth to witness against them.