Numbers 8:18-20

New Century Version

¹⁸ But I have taken the Levites instead of all the firstborn in Israel. ¹⁹ From all the Israelites I have given the Levites to Aaron and his sons so that they may serve the Israelites at the Meeting Tent. They will help remove the Israelites’ sins so they will belong to the Lord and so that no disaster will strike the Israelites when they approach the Holy Place.”

²⁰ So Moses, Aaron, and all the Israelites obeyed and did with the Levites what the Lord commanded Moses.