Numbers 4:16

4:16 “The appointed responsibility of Eleazar son of Aaron the priest is for the oil for the light, and the spiced incense, and the daily grain offering, and the anointing oil; he also has the appointed responsibility over all the tabernacle with all that is in it, over the sanctuary and over all its furnishings.”

Numbers 4:28

4:28 This is the service of the families of the Gershonites concerning the tent of meeting. Their responsibilities will be under the authority of Ithamar son of Aaron the priest.

Numbers 4:33

4:33 This is the service of the families of the Merarites, their entire service concerning the tent of meeting, under the authority of Ithamar son of Aaron the priest.”