This is the service of the families of the sons of Merari, as all their service for the tabernacle of meeting, under the authority of Ithamar the son of Aaron the priest."
Numbers 4:33
Surrounding context
4:32 and the pillars around the court with their sockets, pegs, and cords, with all their furnishings and all their service; and you shall assign to each man by name the items he must carry.
4:33 This is the service of the families of the sons of Merari, as all their service for the tabernacle of meeting, under the authority of Ithamar the son of Aaron the priest."
4:34 And Moses, Aaron, and the leaders of the congregation numbered the sons of the Kohathites by their families and by their fathers' house,