Numbers 8:13-15

New Century Version

¹³ Make the Levites stand in front of Aaron and his sons and present the Levites as an offering to the Lord. ¹⁴ In this way you must set apart the Levites from the other Israelites; the Levites will be mine.

¹⁵ “Make the Levites pure, and present them as an offering so that they may come to work at the Meeting Tent.