Leviticus 16:9

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.

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

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