Leviticus 9:6-8

New King James Version

⁶ Then Moses said, “This is the thing which the Lord commanded you to do, and the glory of the Lord will appear to you.” ⁷ And Moses said to Aaron, “Go to the altar, ^(A)offer your sin offering and your burnt offering, and make atonement for yourself and for the people. ^(B)Offer the offering of the people, and make atonement for them, as the Lord commanded.”

⁸ Aaron therefore went to the altar and killed the calf of the sin offering, which was for himself.