Numbers 7:2

7:2 Then the leaders of Israel, the heads of their clans, made an offering. They were the leaders of the tribes; they were the ones who had been supervising the numbering.

Numbers 17:6

17:6 So Moses spoke to the Israelites, and each of their leaders gave him a staff, one for each leader, according to their tribes – twelve staffs; the staff of Aaron was among their staffs.

Numbers 34:13

34:13 Then Moses commanded the Israelites: “This is the land which you will inherit by lot, which the Lord has commanded to be given to the nine and a half tribes,