Numbers 8:22 BBE

²⁰  All these things Moses and Aaron and the children of Israel did to the Levites; as the Lord gave orders to Moses about the Levites, so the children of Israel did.

²¹  And the Levites were made clean from sin, and their clothing was washed, and Aaron gave them for a wave offering before the Lord; and Aaron took away their sin and made them clean.

²²  And then the Levites went in to do their work in the Tent of meeting before Aaron and his sons: all the orders which the Lord had given Moses about the Levites were put into effect.

²³  And the Lord said to Moses,

²⁴  This is the rule for the Levites: those of twenty-five years old and over are to go in and do the work of the Tent of meeting;