Leviticus 16:5-10

⁵And of the assembly of the children of Israel shall he take two bucks of the goats for a sin-offering, and one ram for a burnt-offering.

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 Jehovah, before the entrance of the tent of meeting.

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

⁹And Aaron shall present the goat upon which the lot fell for Jehovah, and offer it as a sin-offering.

¹⁰And the goat upon which the lot fell for Azazel shall be set alive before Jehovah, to make atonement with it, to send it away as Azazel into the wilderness.