This is the service of the family of the Gershonites, in the tabernacle of the covenant, and they shall be under the hand of Ithamar, the son of Aaron the priest.
from thirty years and above, even to fifty years, of all who enter to the office of their ministry and to the service of the covenant of the testimony.
The other four wagons and eight oxen he gave to the sons of Merari, according to their offices and service, under the hand of Ithamar, the son of Aaron the priest.