Numbers 8:10-12

Authorized (King James) Version

¹⁰ and thou shalt bring the Levites before the Lord: and the children of Israel shall put their hands upon the Levites: ¹¹ and Aaron shall offer the Levites before the Lord for an offering of the children of Israel, that they may execute the service of the Lord. ¹² And the Levites shall lay their hands upon the heads of the bullocks: and thou shalt offer the one for a sin offering, and the other for a burnt offering, unto the Lord, to make an atonement for the Levites.