Numbers 10:4
And if they blow with one, then the princes, the heads of the thousands of Israel, shall gather unto thee.
Exodus 18:21
But do thou provide among all the people able men, such as fear God, men of truth, hating covetousness; and place them over them, chiefs of thousands, chiefs of hundreds, chiefs of fifties, and chiefs of tens,
Numbers 7:2
that the princes of Israel, the heads of their fathers' houses, the princes of the tribes, they that were over them that had been numbered, offered;
Numbers 1:4-16
And with you there shall be a man for every tribe, a man who is the head of his father's house.
Deuteronomy 1:15
So I took the chiefs of your tribes, wise men and known, and made them chiefs over you, captains of thousands, and captains of hundreds, and captains of fifties, and captains of tens, and officers for your tribes.