TSK · Numbers 18:7

"Bring Aaron your brother, and his sons with him, near to you from among the children of Israel, that he may minister to me in the priest's office, even Aaron, Nadab and Abihu, Eleazar and Ithamar, Aaron's sons.

This is the anointing portion of Aaron, and the anointing portion of his sons, out of the offerings of Yahweh made by fire, in the day when he presented them to minister to Yahweh in the priest's office;

He shall take a censer full of coals of fire from off the altar before Yahweh, and two handfuls of sweet incense beaten small, and bring it within the veil:

You shall appoint Aaron and his sons, and they shall keep their priesthood. The stranger who comes near shall be put to death."

and he spoke to Korah and to all his company, saying, "In the morning Yahweh will show who are his, and who is holy, and will cause him to come near to him: even him whom he shall choose he will cause to come near to him.

They shall be joined to you, and keep the responsibility of the Tent of Meeting, for all the service of the Tent: and a stranger shall not come near to you.

Did I choose him out of all the tribes of Israel to be my priest, to go up to my altar, to burn incense, to wear an ephod before me? Did I give to the house of your father all the offerings of the children of Israel made by fire?

John answered, "A man can receive nothing, unless it has been given him from heaven.

To me, the very least of all saints, was this grace given, to preach to the Gentiles the unsearchable riches of Christ,

After the second veil was the tabernacle which is called the Holy of Holies,