Numbers 8:21-23

English Standard Version

²¹ And ^(A)the Levites purified themselves from sin and washed their clothes, and ^(B)Aaron offered them as a wave offering before the Lord, and Aaron made atonement for them to cleanse them. ²² And after that the Levites went in to do their service in the tent of meeting before Aaron and his sons; as the Lord had commanded Moses concerning the Levites, so they did to them.

Retirement of the Levites

²³ And the Lord spoke to Moses, saying,