Numbers 4:24-28
24 “This is the service of the Gershonite clans as they work and carry burdens:
25 They are to carry the curtains of the tabernacle, the Tent of Meeting, its covering and the outer covering of hides of sea cows, the curtains for the entrance to the Tent of Meeting,
26 the curtains of the courtyard surrounding the tabernacle and altar, the curtain for the entrance, the ropes and all the equipment used in its service. The Gershonites are to do all that needs to be done with these things.
27 All their service, whether carrying or doing other work, is to be done under the direction of Aaron and his sons. You shall assign to them as their responsibility all they are to carry.
28 This is the service of the Gershonite clans at the Tent of Meeting. Their duties are to be under the direction of Ithamar son of Aaron, the priest.