Numbers 8:12-14

New International Version - UK

¹² ‘Then the Levites are to lay their hands on the heads of the bulls, using one for a sin offering to the Lord and the other for a burnt offering, to make atonement for the Levites. ¹³ Make the Levites stand in front of Aaron and his sons and then present them as a wave offering to the Lord. ¹⁴ In this way you are to set the Levites apart from the other Israelites, and the Levites will be mine.