Numbers 10:4

Amplified Bible

However, if a single trumpet is blown, then the leaders, heads of the tribes of Israel, shall gather themselves to you.

Cross References

Exodus 18:21

Furthermore, you shall select from all the people competent men who [reverently] fear God, men of truth, those who hate dishonest gain; you shall place these over the people as leaders of thousands, of hundreds, of fifties and of tens.

Numbers 7:2

Then the leaders of Israel, the heads of their fathers’ households, made offerings. (These were the leaders of the tribes; they were the ones who were over the men who were numbered.)

Deuteronomy 1:15

So 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.