Numbers 4:29-33
Duties of the Merarites
29“As for the sons of Merari, you shall number them by their families, by their fathers’ households; 30from athirty years and upward even to fifty years old, you shall number them, everyone who enters the duty of performing the service of the tent of meeting. 31“Now this is the responsibility of their loads, for all their service in the tent of meeting: the boards of the tabernacle and its bars and its pillars and its bases, 32and the pillars around the court and their bases and their pegs and their cords, with all their equipment and with all their service; and you shall assign each man by name the items of the responsibility of 1his load. 33“This is the service of the families of the sons of Merari, according to all their service in the tent of meeting, 1under the direction of Ithamar the son of Aaron the priest.”