Leviticus 16:7-10

7And he shall take the two goats, and present them before Yhwh at the door of the tabernacle of the congregation.

8And Aaron shall cast lots upon the two goats; one lot for Yhwh, and the other lot for the scapegoat.1

9And Aaron shall bring the goat upon which Yhwh's lot fell, and offer him for a sin offering.2

10But the goat, on which the lot fell to be the scapegoat, shall be presented alive before Yhwh, to make an atonement with him, and to let him go for a scapegoat into the wilderness.