Numbers 8:24
This that unto the Levites: from twenty and five years old and upward they shall go in to wait upon the service of the tabernacle of the congregation:
ā The Restored Word Bible
Context
22 And after that went the Levites in to do their service in the tabernacle of the congregation before Aaron, and before his sons: as the Yahuah had commanded Moses concerning the Levites, so did they unto them.
23 And the Yahuah spake unto Moses, saying,
24 This that unto the Levites: from twenty and five years old and upward they shall go in to wait upon the service of the tabernacle of the congregation:
25 And from the age of fifty years they shall cease waiting upon the service , and shall serve no more:
26 But shall minister with their brethren in the tabernacle of the congregation, to keep the charge, and shall do no service. Thus shall you do unto the Levites touching their charge.