Leviticus 16:17-24

There shall be no person in the Tent of Meeting when the high priest goes in to make atonement in the Holy Place [within the veil] until he comes out, so that he may make atonement for himself (his own sins) and for his household and for all the congregation of Israel. Then he shall go out to the altar [of burnt offering in the court] which is before the LORD and make atonement for it, and shall take some of the blood of the bull and of the goat and put it on the horns of the altar on all sides. With his finger he shall sprinkle some of the blood on the altar of burnt offering seven times and cleanse it and consecrate it from the uncleanness of the Israelites. “When he has finished atoning for the Holy Place and the Tent of Meeting and the altar, he shall present the live goat. Then Aaron shall lay both of his hands on the head of the live goat, and confess over it all the wickedness of the sons of Israel and all their transgressions in regard to all their sins; and he shall lay them on the head of the goat [the scapegoat, the sin-bearer], and send it away into the wilderness by the hand of a man who is prepared [for the task]. The goat shall carry on itself all their (the Israelites) wickedness, carrying them to a solitary (infertile) land; and he shall release the goat in the wilderness. [Ps 103:12; Is 53:11, 12; John 1:29] “Then Aaron shall come into the Tent of Meeting and take off the linen garments which he put on when he went into the Holy Place (Holy of Holies), and shall leave them there. He shall bathe his body with water in a holy place and put on his clothes, and come out and offer his burnt offering and that of the people, and make atonement for himself and for the people.