Numbers 3:41

3:41 And take the Levites for me – I am the Lord – instead of all the firstborn males among the Israelites, and the livestock of the Levites instead of all the firstborn of the livestock of the Israelites.”

Numbers 11:16

The Response of God

11:16 The Lord said to Moses, “Gather to me seventy men of the elders of Israel, whom you know are elders of the people and officials over them, and bring them to the tent of meeting; let them take their position there with you.