Numbers 8:11; Numbers 8:15; Numbers 8:24; Numbers 8:26

11 Aaron is to present the Levites before the LORD as a wave offering from the Israelites, so that they may be ready to do the work of the LORD.

15 “After you have purified the Levites and presented them as a wave offering, they are to come to do their work at the tent of meeting.

24 “This applies to the Levites: Men twenty-five years old or more shall come to take part in the work at the tent of meeting,

26 They may assist their brothers in performing their duties at the tent of meeting, but they themselves must not do the work. This, then, is how you are to assign the responsibilities of the Levites.”