Numbers 4:31-33 - The Duties Of The Merarite Clans
31 And this the watches from their lifting up, for all their service in the tent of appointment; the boards of the dwelling, and its bars and its pillars, and its bases, 32 And the pillars of the enclosure round about, and their bases, and their pegs, and their cords for all their vessels, and for all their service: and by name ye shall review the vessels of the watches of their lifting up. 33 This the service from the families of the sons of Merari, for all their service in the tent of appointment, by the hand of Ithamar, son of Aaron the priest.