“This applies to the Levites: Men twenty-five years of age or older shall enter to perform the service in the work at the Tent of Meeting.
KJV
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:
ASV
This is that which belongeth unto the Levites: from twenty and five years old and upward they shall go in to wait upon the service in the work of the tent of meeting: