Numbers 3:15

15List the sons of Levi, by fathershouses and by clans; aevery male from a month old and upward you shall list.”

Numbers 4:23

23 bFrom thirty years old up to fifty years old, you shall list them, all who can ccome to do duty, to do service in the tent of meeting.

Numbers 8:24

24This applies to the Levites: dfrom twenty-five years old and upward they
Hebrew he; also verses 25, 26
shall come to do duty in the service of the tent of meeting.
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