LEVITICUS 16:6-9

⁶And Aaron shall present the bullock of the sin offering, which is for himself, and make atonement for himself, and for his house.

⁷And he shall take the two goats, and set them before the LORD at the door of the tent of meeting.

⁸And Aaron shall cast lots upon the two goats; one lot for the LORD, and the other lot for Azazel.

⁹And Aaron shall present the goat upon which the lot fell for the LORD, and offer him for a sin offering.