These were the sons of Levi by their fathers' houses, the heads of fathers' houses as they were registered according to the number of the names of the individuals from twenty years old and upward who were to do the work for the service of the house of the Lord.
for the divisions of the priests and of the Levites, and all the work of the service in the house of the Lord; for all the vessels for the service in the house of the Lord,
from thirty years old up to fifty years old, every one that could enter to do the work of service and the work of bearing burdens in the tent of meeting,