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: From twenty and five years old - See the note on Numbers 4:3, where the two terms of twenty-five and thirty years are reconciled.
Related Commentaries of Numbers 8:24
Numbers 8:24
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: