Leviticus 9:5-7

⁵And they brought that which Moses commanded before the tent of meeting; and all the congregation drew near and stood before the LORD.

⁶And Moses said: 'This is the thing which the LORD commanded that ye should do; that the glory of the LORD may appear unto you.'

⁷And Moses said unto Aaron: 'Draw near unto the altar, and offer thy sin-offering, and thy burnt-offering, and make atonement for thyself, and for the people; and present the offering of the people, and make atonement for them; as the LORD commanded.'