1Yahweh spoke to Moses, saying, 2“Speak to Aaron, and to his sons, and to all the children of Israel, and say to them, ‘This is the thing which Yahweh has commanded: 3Whatever man there is of the house of Israel who kills a bull, or lamb, or goat in the camp, or who kills it outside the camp, 4and hasn’t brought it to the door of the Tent of Meeting to offer it as an offering to Yahweh before Yahweh’s tabernacle: blood shall be imputed to that man. He has shed blood. That man shall be cut off from among his people. 5This is to the end that the children of Israel may bring their sacrifices, which they sacrifice in the open field, that they may bring them to Yahweh, to the door of the Tent of Meeting, to the priest, and sacrifice them for sacrifices of peace offerings to Yahweh. 6The priest shall sprinkle the blood on Yahweh’s altar at the door of the Tent of Meeting, and burn the fat for a pleasant aroma to Yahweh. 7They shall no more sacrifice their sacrifices to the goat idols, after which they play the prostitute. This shall be a statute forever to them throughout their generations.’
8“You shall say to them, ‘Any man there is of the house of Israel, or of the strangers who live as foreigners among them, who offers a burnt offering or sacrifice, 9and doesn’t bring it to the door of the Tent of Meeting to sacrifice it to Yahweh, that man shall be cut off from his people.
10“‘Any man of the house of Israel, or of the strangers who live as foreigners among them, who eats any kind of blood, I will set my face against that soul who eats blood, and will cut him off from among his people. 11For the life of the flesh is in the blood. I have given it to you on the altar to make atonement for your souls; for it is the blood that makes atonement by reason of the life. 12Therefore I have said to the children of Israel, “No person among you may eat blood, nor may any stranger who lives as a foreigner among you eat blood.”
13“‘Whatever man there is of the children of Israel, or of the strangers who live as foreigners among them, who takes in hunting any animal or bird that may be eaten, he shall pour out its blood, and cover it with dust. 14For as to the life of all flesh, its blood is with its life. Therefore I said to the children of Israel, “You shall not eat the blood of any kind of flesh; for the life of all flesh is its blood. Whoever eats it shall be cut off.”
15“‘Every person that eats what dies of itself, or that which is torn by animals, whether he is native-born or a foreigner, shall wash his clothes, and bathe himself in water, and be unclean until the evening. Then he shall be clean. 16But if he doesn’t wash them, or bathe his flesh, then he shall bear his iniquity.’”
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.