Leviticus 9:20-23

²⁰And he put the fat on the breasts, and offered the fat on the altar.

²¹And Aaron separated the breast and the right shoulder as a choice-offering before the Lord, as the Lord commanded Moses.

²²And Aaron lifted up his hands on the people and blessed them; and after he had offered the sin-offering, and the whole-burnt-offerings, and the peace-offerings, he came down.

²³And Moses and Aaron entered into the tabernacle of witness. And they came out and blessed all the people, and the glory of the Lord appeared to all the people.