These were the sons of Lĕwi by their fathers’ houses, the heads of the fathers’ houses as they were counted head by head by the number of their names, who did the work for the service of the House of יהוה, from the age of twenty years and above.
and for the divisions of the priests and the Lĕwites, and for all the work of the service of the House of יהוה, and for all the vessels of service in the House of יהוה;
“Register them, from thirty years old and above, even to fifty years old, all who enter to perform the service, to do the service in the Tent of Appointment.
from thirty years old and above, even to fifty years old, all who came to do the work of service and the work of bearing burdens in the Tent of Appointment,