Eleazar the son of Aaron the priest was to be chief over the leaders of the Levites and to have the oversight of those who kept the guard of the sanctuary.
At the appointment of Aaron and his sons will be all the service of the sons of the Gershonites, in all their burdens, and in all their service. And you shall assign to them all their tasks as their duty.
To the office of Eleazar, Aaron the priest’s son, pertains the oil for the light, and the sweet incense, and the daily grain offering, and the anointing oil, and the oversight of all the tabernacle, and of all that is in it, in the sanctuary, and in the instruments thereof.
Their duty included the ark, and the table, and the lampstand, and the altars, and the vessels of the sanctuary they minister with, and the hanging, and all its service.
But they will minister with their brothers in the tent of meeting, to attend to their needs, but will not do the work. Thus you will do to the Levites concerning their duties.