Leviticus 16:17

15“Then he shall 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 bull, and sprinkle it on the mercy seat and before the mercy seat.

16He shall make atonement for the Holy Place, because of the uncleanness of the children of Israel, and because of their transgressions, even all their sins; and so he shall do for the Tent of Meeting that dwells with them in the middle of their uncleanness.

17No one shall be in the Tent of Meeting when he enters to make atonement in the Holy Place, until he comes out, and has made atonement for himself and for his household, and for all the assembly of Israel.

18“He shall go out to the altar that is before the LORD and make atonement for it, and shall take some of the bull’s blood, and some of the goat’s blood, and put it around on the horns of the altar.

19He shall sprinkle some of the blood on it with his finger seven times, and cleanse it, and make it holy from the uncleanness of the children of Israel.