So Moses and Aaron and the chiefs of the people took in hand the numbering of the sons of the Kohathites, by families, in the order of their fathers' houses;
These were the sons of Levi, grouped by families, the heads of the families of those who were numbered by name, by heads, all those of twenty years old and over who did the work of the house of the Lord.
This is the work which the sons of Merari are to do in connection with the Tent of meeting, under the direction of Ithamar, the son of Aaron the priest.