These were the sons of Levi according to their fathers’ houses, the heads of the fathers’ houses as they were registered by the number of their names according to their head count, those doing the work for the service of the house of the Lord, from twenty years old and up.
Besides those males registered from three years old and above, they distributed to all who entered into the house of the Lord his daily portion, for their services according to their duties and their divisions.
This is what belongs to the Levites: From twenty-five years old and older they will go in to do their duty concerning the service of the tent of meeting.