1“‘If his offering is a sacrifice of peace offerings, if he offers it from the herd, whether male or female, he shall offer it without defect before Yahweh. 2He shall lay his hand on the head of his offering, and kill it at the door of the Tent of Meeting. Aaron’s sons, the priests, shall sprinkle the blood around on the altar. 3He shall offer of the sacrifice of peace offerings an offering made by fire to Yahweh. The fat that covers the innards, and all the fat that is on the innards, 4and the two kidneys, and the fat that is on them, which is by the loins, and the cover on the liver, with the kidneys, he shall take away. 5Aaron’s sons shall burn it on the altar on the burnt offering, which is on the wood that is on the fire: it is an offering made by fire, of a pleasant aroma to Yahweh.
6“‘If his offering for a sacrifice of peace offerings to Yahweh is from the flock, either male or female, he shall offer it without defect. 7If he offers a lamb for his offering, then he shall offer it before Yahweh; 8and he shall lay his hand on the head of his offering, and kill it before the Tent of Meeting. Aaron’s sons shall sprinkle its blood around on the altar. 9He shall offer from the sacrifice of peace offerings an offering made by fire to Yahweh; its fat, the entire tail fat, he shall take away close to the backbone; and the fat that covers the entrails, and all the fat that is on the entrails, 10and the two kidneys, and the fat that is on them, which is by the loins, and the cover on the liver, with the kidneys, he shall take away. 11The priest shall burn it on the altar: it is the food of the offering made by fire to Yahweh.
12“‘If his offering is a goat, then he shall offer it before Yahweh. 13He shall lay his hand on its head, and kill it before the Tent of Meeting; and the sons of Aaron shall sprinkle its blood around on the altar. 14He shall offer from it as his offering, an offering made by fire to Yahweh; the fat that covers the innards, and all the fat that is on the innards, 15and the two kidneys, and the fat that is on them, which is by the loins, and the cover on the liver, with the kidneys, he shall take away. 16The priest shall burn them on the altar: it is the food of the offering made by fire, for a pleasant aroma; all the fat is Yahweh’s.
17“‘It shall be a perpetual statute throughout your generations in all your dwellings, that you shall eat neither fat nor blood.’”
Aaron was the son of Amram and Jochebed, the brother of Moses and Miriam. He was the first priest of the people of Israel. He was appointed by God to be a spokesman for Moses when Moses went before the Pharaoh of Egypt to demand that Pharaoh would release the people of Israel from slavery. When facing Pharaoh, it was Aaron who threw his rod before Pharaoh, which turned into a snake. He also assisted Moses in declaring various judgments on Pharaoh and the Egyptian people until finally the Pharaoh conceded to the demand.
Aaron was also present at Sinai when Moses received the Ten Commandments, but he also conceded to the creation of the Golden Calf by the Israelites during the time that Moses was on the mountain receiving the law of God.
Aaron was important for the development of the priesthood in Israel, and had two sons who died, and Eleazar and Ithamar succeeded him as priests. After his death, he was buried on Mt. Hor.
The preceding information is based on Herbert Lockyer, All the Men of the Bible, (Zondervan: Grand Rapids, MI, 1958) and All the Women of the Bible (Zondervan: Grand Rapids, MI, 1967), Who's Who in the Bible (Bonanza Books, New York, 1981), and Biographies of Bible Characters, People and Characters in the Bible.