Numbers 8:11 in the World English Bible
and Aaron shall offer the Levites before the LORD for a wave offering on the behalf of the children of Israel, that it may be theirs to do the service of the LORD.
Context
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.