Numbers 3:25-26

25Now 1the duties of the sons of Gershon in the tent of meeting involved the tabernacle and 2the tent, its covering, and 3the screen for the doorway of the tent of meeting, 26and 4the hangings of the court, and 5the screen for the doorway of the court which is around the tabernacle and the altar, and its cords, according to all the service 6concerning them.