Numbers 8:8-10

American Standard Version

⁸ Then let them take a young bullock, and its meal-offering, fine flour mingled with oil; and another young bullock shalt thou take for a sin-offering. ⁹ And thou shalt present the Levites before the tent of meeting: and thou shalt assemble the whole congregation of the children of Israel: ¹⁰ and thou shalt present the Levites before Jehovah. And the children of Israel shall lay their hands upon the Levites: