Take the sum of the sons of Kohath from among the sons of Levi, after their families, by the house of their fathers,
the sons of Kohath by their families: Amram, and Izhar, Hebron, and Uzziel;
Of Kohath was the family of the Amramites, and the family of the Izharites, and the family of the Hebronites, and the family of the Uzzielites. These are the families of the Kohathites.
And the Lord spoke to Moses and to Aaron, saying:
from thirty years old and older, even to fifty years old, all that enter into the host, to do the work in the tent of meeting.