Leviticus 16:10-11

But the goat on which the lot fell to be the scapegoat shall be presented alive before the LORD, to make atonement upon it, and to let it go as the scapegoat into the wilderness. “And Aaron shall bring the bull of the sin offering, which is for himself, and make atonement for himself and for his house, and shall kill the bull as the sin offering which is for himself.