Leviticus 16:6-12

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.

¹⁰But the goat, on which the lot fell for Azazel, shall be set alive before the LORD, to make atonement over him, to send him away for Azazel into the wilderness.

¹¹And Aaron shall present the bullock of the sin-offering, which is for himself, and shall make atonement for himself, and for his house, and shall kill the bullock of the sin-offering which is for himself.

¹²And he shall take a censer full of coals of fire from off the altar before the LORD, and his hands full of sweet incense beaten small, and bring it within the veil.