Leviticus 16:5

3“Aaron shall come into the sanctuary with a young bull for a sin offering, and a ram for a burnt offering.

4He shall put on the holy linen tunic. He shall have the linen trousers on his body, and shall put on the linen sash, and he shall be clothed with the linen turban. They are the holy garments. He shall bathe his body in water, and put them on.

5He shall take from the congregation of the children of Israel two male goats for a sin offering, and one ram for a burnt offering.

6“Aaron shall offer the bull of the sin offering, which is for himself, and make atonement for himself and for his house.

7He shall take the two goats, and set them before the LORD at the door of the Tent of Meeting.