Leviticus 16:6-9

⁶“Aaron shall offer the bull of the sin offering, which is for himself, and make atonement for himself and for his house.

⁷He shall take the two goats, and set them before the LORD at the door of the Tent of Meeting.

⁸Aaron shall cast lots for the two goats: one lot for the LORD, and the other lot for the scapegoat.

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