These were the sons of Levi after the house of their fathers; even the chief of the fathers, as they were counted by number of names by their polls, that did the work for the service of the house of the Lord, from the age of twenty years and upward.
And of Kohath was the family of the Am´ramites, and the family of the Iz´eharites, and the family of the He´bronites, and the family of the Uz´zi-elites: these are the families of the Ko´hathites.
This is the service of the families of the sons of Mera´ri, according to all their service, in the tabernacle of the congregation, under the hand of Ith´amar the son of Aaron the priest.
from thirty years old and upward even unto fifty years old, every one that entereth into the service, for the work in the tabernacle of the congregation: