Leviticus 16:32-34

So the priest who is anointed and ordained to serve as priest in his father’s place shall make atonement: he shall thus put on the linen garments, the holy garments, and make atonement for the holy sanctuary, and he shall make atonement for the tent of meeting and for the altar. He shall also make atonement for the priests and for all the people of the assembly. Now you shall have this as a permanent statute, to make atonement for the sons of Israel for all their sins once every year.” And just as the LORD had commanded Moses, so he did.