Leviticus 16:15-19

Then shall he kill the goat of the sin-offering, that is for the people, and bring his blood within the veil, and do with his blood as he did with the blood of the bullock, and sprinkle it upon the mercy-seat, and before the mercy-seat: and he shall make atonement for the holy place, because of the uncleannesses of the children of Israel, and because of their transgressions, even all their sins: and so shall he do for the tent of meeting, that dwelleth with them in the midst of their uncleannesses. And there shall be no man in the tent of meeting when he goeth in to make atonement in the holy place, until he come out, and have made atonement for himself, and for his household, and for all the assembly of Israel. And he shall go out unto the altar that is before Jehovah, and make atonement for it, and shall take of the blood of the bullock, and of the blood of the goat, and put it upon the horns of the altar round about. And he shall sprinkle of the blood upon it with his finger seven times, and cleanse it, and hallow it from the uncleannesses of the children of Israel.