Leviticus 16:11-17

11Aaron shall present athe bull as a sin offering for himself, and shall make atonement for himself and for his house. He shall kill the bull as a sin offering for himself. 12And he shall take ba censer full of coals of fire from the altar before the  Lord, and two handfuls of sweet incense beaten small, and he shall bring it inside the veil 13 cand put the incense on the fire before the  Lord, that the cloud of the incense may cover dthe mercy seat that is over the testimony, so that he does not die. 14And ehe shall take some of the blood of the bull and sprinkle it with his finger on the front of the mercy seat on the east side, and in front of the mercy seat he shall sprinkle some of the blood with his finger seven times.

15 f“Then he shall kill the goat of the sin offering that is for the people and bring its blood ginside the veil and do with its blood as he did with the blood of the bull, sprinkling it over the mercy seat and in front of the mercy seat. 16Thus he shall hmake atonement for the Holy Place, 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 dwells with them in the midst of their uncleannesses. 17 iNo one may be in the tent of meeting from the time he enters to make atonement in the Holy Place until he comes out and has made atonement for himself and for his house and for all the assembly of Israel.
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