Numbers 8:8-14

King James Version

⁸ Then let them take a young bullock with his meat offering, even fine flour mingled with oil, and another young bullock shalt thou take for a sin offering.

⁹ And thou shalt bring the Levites before the tabernacle of the congregation: and thou shalt gather the whole assembly of the children of Israel together:

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.

¹³ And thou shalt set the Levites before Aaron, and before his sons, and offer them for an offering unto the Lord.

¹⁴ Thus shalt thou separate the Levites from among the children of Israel: and the Levites shall be mine.