And the Lord spake unto Moses At the same time he gave the instructions about the consecration of the Levites, the time of their entrance on their service, and of leaving it, was fixed: saying; as follows.
21
The Levites purified themselves and washed their clothes. Aaron presented them as an uplifted offering in the LORD's presence, and he sought reconciliation for them in order to cleanse them.
22
After this the Levites went in to perform their service in the meeting tent before Aaron and his sons. They did for the Levites just as the LORD had commanded Moses concerning them.