Leviticus 9:5-7

⁵And what Mosheh had commanded they brought before the tabernacle of ordinance, and all the congregation approached and stood before the Lord.

⁶And Mosheh said, This is the thing that the Lord hath commanded to be done, and the glory of the Lord shall be revealed to you.

⁷And Mosheh said to Aharon, Approach the altar, and make thy sin offering and thy burnt sacrifice, and make atonement for thyself and for the people, and perform the oblation of the people, and make atonement for them, as the Lord commanded.