They brought what Moses commanded before the Tent of Meeting.
All the congregation came near and stood before the LORD.
Moses said, “This is the thing which the LORD commanded that you should do; and the LORD’s glory shall appear to you.”
Moses said to Aaron, “Draw near to the altar, and offer your sin offering, and your burnt offering, and make atonement for yourself, and for the people; and offer the offering of the people, and make atonement for them, as the LORD commanded.”
So Aaron came near to the altar, and killed the calf of the sin offering, which was for himself.