At the commandment of Aaron and his sons shall be all the service of the sons of the Gershonites, in all their burden and in all their service; and you shall appoint their duty to them in all their responsibilities.
This is the service of the families of the sons of the Gershonites in the Tent of Meeting.
Their duty shall be under the hand of Ithamar the son of Aaron the priest.
“As for the sons of Merari, you shall count them by their families, by their fathers’ houses;