Then the LORD said to Moses and Aaron,

Numbers 4:16
Eleazar son of Aaron the priest shall oversee the oil for the light, the fragrant incense, the daily grain offering, and the anointing oil. He has oversight of the entire tabernacle and everything in it, including the holy objects and their utensils."

Numbers 4:18
"Do not allow the Kohathite tribal clans to be cut off from among the Levites.

And the LORD spoke to Moses and to Aaron saying,