Numbers 8:24
“This is it that belongeth 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:”
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 Lord had commanded Moses concerning the Levites, so did they unto them.
And the Lord spake unto Moses, saying,
This is it that belongeth 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:
And from the age of fifty years they shall cease waiting upon the service thereof, and shall serve no more:
But shall minister with their brethren in the tabernacle of the congregation, to keep the charge, and shall do no service. Thus shalt thou do unto the Levites touching their charge.
Why This Verse Was Tagged
This verse contains specific terms directly associated with this theme.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“From thirty years old and upward even until fifty years old, all that enter into the host, to do the work in the tabernacle of the congregation.”
“Now the Levites were numbered from the age of thirty years and upward: and their number by their polls, man by man, was thirty and eight thousand.”
“From thirty years old and upward even until fifty years old, all that enter into the host, to do the work in the tabernacle of the congregation.”
“From thirty years old and upward even unto fifty years old, every one that entereth into the service, for the work in the tabernacle of the congregation:”
“And the pattern of all that he had by the spirit, of the courts of the house of the Lord, and of all the chambers round about, of the treasuries of the house of God, and of the treasuries of the dedicated things:”