Numbers 4 27
All the service of the sons of the Gershonites, that is, all their loads and all their work, shall be performed at the command of Aaron and his sons; and you shall assign to them as a duty all their loads.
All the service of the sons of the Gershonites, that is, all their loads and all their work, shall be performed at the command of Aaron and his sons; and you shall assign to them as a duty all their loads.