Leviticus 9:6-8

New Revised Standard Version Catholic Edition

⁶ And Moses said, “This is the thing that the Lord commanded you to do, so that the glory of the Lord may appear to you.” ⁷ Then Moses said to Aaron, “Draw near to the altar and sacrifice your sin offering and your burnt offering, and make atonement for yourself and for the people; and sacrifice the offering of the people, and make atonement for them; as the Lord has commanded.”

⁸ Aaron drew near to the altar, and slaughtered the calf of the sin offering, which was for himself.