Leviticus 16:6-10, 20-22

“Aaron will offer the bull for his own Absolution-Offering in order to make atonement for himself and his household. Then he will set the two goats before GOD at the entrance to the Tent of Meeting and cast lots over the two goats, one lot for GOD and the other lot for Azazel. He will offer the goat on which the lot to GOD falls as an Absolution-Offering. The goat on which the lot for Azazel falls will be sent out into the wilderness to Azazel to make atonement.

“When Aaron finishes making atonement for the Holy of Holies, the Tent of Meeting, and the Altar, he will bring up the live goat, lay both hands on the live goat’s head, and confess all the iniquities of the People of Israel, all their acts of rebellion, all their sins. He will put all the sins on the goat’s head and send it off into the wilderness, led out by a man standing by and ready. The goat will carry all their iniquities to an empty wasteland; the man will let him loose out there in the wilderness.