Numbers 7:1-2
The Leader’s Offerings
7:1 When Moses had completed setting up the tabernacle, he anointed it and consecrated it and all its furnishings, and he anointed and consecrated the altar and all its utensils.
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.