And Moses and Aaron and the leaders of the congregation numbered the sons of the Kohathites according to their families, and according to the house of their fathers.
These were the sons of Levi after the house of their fathers, the chief of the fathers, as they were counted by number of names by their heads, the ones who did the work for the service of the house of Jehovah, from the age of twenty years and upward.
And of Kohath was the family of the Amramites, and the family of the Izeharites, the family of the Hebronites, and the family of the Uzzielites. These were the families of the Kohathites.
This is the service of the families of the sons of Merari, according to all their service, in the tabernacle of the congregation under the hand of Ithamar the son of Aaron the priest.
They numbered them from thirty years old and upward even to fifty years old, everyone that entered into the service, for the work in the tabernacle of the congregation.