Numbers 4:27-29

Amplified Bible, Classic Edition

²⁷ Under the direction of Aaron and his sons shall be all the service of the sons of the Gershonites, in all they have to carry and in all they have to do; and you shall assign to their charge all that they are to carry [on the march].

²⁸ This is the service of the families of the sons of Gershon in the Tent of Meeting; and their work shall be under the direction of Ithamar son of Aaron, the [high] priest.

²⁹ As for the sons of Merari, you shall number them by their families and their fathers’ houses;