For the four chief door-keepers, who were Levites, had a special position, looking after the rooms and the store-houses of the house of God.
1 Chronicles 9:26
The sons of Levi: Gershon, Kohath, and Merari.
1 Chronicles 6:1
But Aaron and his sons made offerings on the altar of burned offering, and on the altar of perfume, for all the work of the most holy place, and to take away the sin of Israel, doing everything ordered by Moses, the servant of God.
1 Chronicles 6:49