Numbers 10:4

Revised Standard Version CI

But if they blow only one, then the leaders, the heads of the tribes of Israel, shall gather themselves to you.

Cross References

Exodus 18:21

Moreover choose able men from all the people, such as fear God, men who are trustworthy and who hate a bribe; and place such men over the people as rulers of thousands, of hundreds, of fifties, and of tens.

Numbers 7:2

the leaders of Israel, heads of their fathers' houses, the leaders of the tribes, who were over those who were numbered,

Deuteronomy 1:15

So I took the heads of your tribes, wise and experienced men, and set them as heads over you, commanders of thousands, commanders of hundreds, commanders of fifties, commanders of tens, and officers, throughout your tribes.