Numbers 3:23-25

23The families of the Gershonites were to camp behind the 1tabernacle westward,

24and the leader of the fathers’ households of the Gershonites was Eliasaph the son of Lael.

25Now 2the duties of the sons of Gershon in the tent of meeting involved the tabernacle and 3the tent, its covering, and 4the screen for the doorway of the tent of meeting,