Numbers 4:17

¹⁵And Aaron and his sons shall finish covering the holy things, and all the holy vessels, when the camp begins to move; and afterward the sons of Kohath shall go in to take up the furniture; but shall not touch the holy things, lest they die: these shall the sons of Kohath bear in the tabernacle of witness.

¹⁶Eleazar the son of Aaron the priest is overseer—the oil of the light, and the incense of composition, and the daily meat offering and the anointing oil, are his charge; even the oversight of the whole tabernacle, and all things that are in it in the holy place, in all the works.

— Numbers 4:17 —

¹⁸Ye shall not destroy the family of Kohath from the tribe out of the midst of the Levites.

¹⁹This do ye to them, and they shall live and not die, when they approach the holy of holies: Let Aaron and his sons advance, and they shall place them each in his post for bearing.