Exodus 29:13-22

¹³ And take all the fat covering the inside of the ox, and the fat joining the liver and the two kidneys with the fat round them, and let them be burned on the altar; ¹⁴ But the flesh of the ox and its skin and its waste parts are to be burned outside the circle of the tents, for it is a sin-offering. ¹⁵ Then take one of the sheep, and let Aaron and his sons put their hands on its head. ¹⁶ Then let it be put to death, so that the sides of the altar are marked with its blood. ¹⁷ Then the sheep is to be cut up into its parts, and after washing its legs and its inside parts, you are to put them with the parts and the head, ¹⁸ And let them all be burned on the altar as a burned offering to the Lord: a sweet smell, an offering made by fire to the Lord. ¹⁹ Then take the other sheep; and after Aaron and his sons have put their hands on its head, ²⁰ You are to put the sheep to death, and take some of its blood and put it on the point of Aaron's right ear, and of the right ears of his sons, and on the thumbs of their right hands and the great toes of their right feet, dropping the rest of the blood on the sides of the altar. ²¹ Then take some of the blood on the altar, and the oil, and put it on Aaron and his robes and on his sons and on their robes, so that he and his robes and his sons and their robes may be made holy. ²² Then take the fat of the sheep, the fat tail, the fat covering the insides, and the fat joining the liver and the two kidneys with the fat round them, and the right leg; for by the offering of this sheep they are to be marked out as priests: