Numbers 8:11-13

Darby Translation

¹¹ And Aaron shall offer the Levites as a wave-offering before Jehovah from the children of Israel, and they shall perform the service of Jehovah.

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, to Jehovah, to make atonement for the Levites.

¹³ And thou shalt set the Levites before Aaron, and before his sons, and offer them as a wave-offering to Jehovah.