Numbers 3:23-25

Young's Literal Translation

²³ The families of the Gershonite, behind the tabernacle, do encamp westward.

²⁴ And the prince of a father's house for the Gershonite [is] Eliasaph son of Lael.

²⁵ And the charge of the sons of Gershon in the tent of meeting [is] the tabernacle, and the tent, its covering, and the vail at the opening of the tent of meeting,