Priest: Duties of Chiefs of Levites
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Numbers 3:9, 32
Assign the Levites to Aaron and his sons; they have been given exclusively to him from among the Israelites. / The chief of the leaders of the Levites was Eleazar son of Aaron the priest; he oversaw those responsible for the duties of the sanctuary.
Numbers 4:19, 28, 33
In order that they may live and not die when they come near the most holy things, do this for them: Aaron and his sons are to go in and assign each man his task and what he is to carry. / This is the service of the Gershonite clans at the Tent of Meeting, and their duties shall be under the direction of Ithamar son of Aaron the priest. / This is the service of the Merarite clans according to all their work at the Tent of Meeting, under the direction of Ithamar son of Aaron the priest.”
1 Chronicles 9:20
In earlier times Phinehas son of Eleazar had been in charge of the gatekeepers, and the LORD was with him.