“As for the sons of Merari, you shall number them by their families and their fathers' houses;
also the pillars of the court round about, with their bases and pegs and cords.
This is the service of the families of the sons of the Gershonites in the tent of meeting, and their work is to be under the oversight of Ithamar the son of Aaron the priest.
from thirty years old up to fifty years old, you shall number them, every one that can enter the service, to do the work of the tent of meeting.
and four wagons and eight oxen he gave to the sons of Merari, according to their service, under the direction of Ithamar the son of Aaron the priest.