All those numbered, whom Moses numbered -- Aaron also, and the princes of Israel -- of the Levites, by their families, and by the house of their fathers,
and the genealogy of the priests by the house of their fathers, and of the Levites, from a son of twenty years and upward, in their charges, in their courses;
from a son of thirty years and upward even unto a son of fifty years, every one who is going in to do the work of the service, even the service of burden in the tent of meeting,