Numbers 8:9

⁷And thus shalt thou perform their purification: thou shalt sprinkle them with water of purification, and a razor shall come upon the whole of their body, and they shall wash their garments, and shall be clean.

⁸And they shall take one calf of the herd, and its meat offering, fine flour mingled with oil: and thou shalt take a calf of a year old of the herd for a sin offering.

— Numbers 8:9 —

¹⁰And thou shalt bring the Levites before the Lord; and the sons of Israel shall lay their hands upon the Levites.

¹¹And Aaron shall separate the Levites for a gift before the Lord from the children of Israel: and they shall be prepared to perform the works of the Lord.