Leviticus 16:2
King James Version
“And the LORD said unto Moses, Speak unto Aaron thy brother, that he come not at all times into the holy within the vail before the mercy seat, which upon the ark; that he die not: for I will appear in the cloud upon the mercy seat.”
Context
1And the LORD spake unto Moses after the death of the two sons of Aaron, when they offered before the LORD, and died;
2And the LORD said unto Moses, Speak unto Aaron thy brother, that he come not at all times into the holy within the vail before the mercy seat, which upon the ark; that he die not: for I will appear in the cloud upon the mercy seat.
3Thus shall Aaron come into the holy with a young bullock for a sin offering, and a ram for a burnt offering.
4He shall put on the holy linen coat, and he shall have the linen breeches upon his flesh, and shall be girded with a linen girdle, and with the linen mitre shall he be attired: these holy garments; therefore shall he wash his flesh in water, and put them on.
5And he shall take of the congregation of the children of Israel two kids of the goats for a sin offering, and one ram for a burnt offering.