Lev 16:14-16

14He shall take some of the blood of the bull, and sprinkle it with his finger on the front of the mercy seat, and before the mercy seat he shall sprinkle the blood with his finger seven times.15He shall slaughter the goat of the sin offering that is for the people and bring its blood inside the curtain, and do with its blood as he did with the blood of the bull, sprinkling it upon the mercy seat and before the mercy seat.16Thus he shall make atonement for the sanctuary, because of the uncleannesses of the people of Israel, and because of their transgressions, all their sins; and so he shall do for the tent of meeting, which remains with them in the midst of their uncleannesses.