And they shall no more offer their sacrifices unto devils, after whom they have gone a whoring. The word rightly translated devils means, literally, shaggy goats (see 2혻Chronicles 11:15; Isaiah 13:21; Isaiah 34:14; where the word occurs). It is generally supposed that the Israelites borrowed their worship of the goat-like spirits of the woods and fields from Egypt. That goat-worship prevailed there in a very foul shape we know (Herod; 2:42), but sacrifices in the open fields are rather a Persian habit (Herod; 1:132). Pan-worship, however, was common to most if not to all agricultural nations. The injunction which follows, This shall be a statute for ever unto them throughout their generations, which cannot be confined to the last few words or verses, shows that the command of Leviticus 17:3 refers to sacrifices, not to ordinary slaughtering. Had slaughtering been meant, the statute could not have been intended to be more than temporary in its obligation. The importance attributed to the regulation is further shown by the declaration previously made, that whoever transgressed it should be cut off from among his people, or excommunicated. In fact, it makes an era in the history of the chosen people. The old patriarchal priesthood having ceased, and the Aaronic priesthood substituted for it, the tabernacle is appointed to serve as a religious centre to the race. Whenever, from this time onwards, sacrifices were offered, without offense, elsewhere than in the court of the tabernacle or temple, as by Samuel (see 1혻Samuel 13:8), and by Elijah (1혻Kings 18:32), it was done by the direct order or dispensation of God.
So essential is the regulation to the maintenance of the Israelitish polity, that it is extended to the strangers which sojourn among them, not confined to those who were of the house of Israel; and the penalty of excommunication is appointed for both classes alike in case of disobedience. It may be noticed that this verse assumes that burnt offerings and peace offerings are offered by the strangers that sojourn among them, as well as by the Israelites by race.
The appointment made just above, that the blood of all animals slain in sacrifice should be offered to the Lord on his altar in the court of the tabernacle, leads naturally to a reiteration of the prohibition of the eating of blood, and a statement of the reason of that prohibition. "But flesh with the life thereof, which is the blood thereof, shall ye not eat," was given as a command to Noah (Genesis 9:4). It has already been repeated twice in the Book of Leviticus (Leviticus 3:17; Leviticus 7:26), and it is still again found in Leviticus 19:26; Deuteronomy 12:16; Deuteronomy 15:23. The present is the locus classicus which explains the earnestness with which the rule is enforced. It begins with an extension of the obligation from the Israelites to the sojourners among them, and with a solemn declaration that, in case of transgression, God will take into his own bands the punishment of the offenders; not only is he to be cut off or excommunicated by political or ecclesiastical authority, but God himself will set his face against that soul that eateth blood, and will cut him off from among his people, by death, or such means as he chooses to adopt. Then follows the reason for the prohibition. For the life of the flesh is in the blood. The blood may not be eaten because it is the vehicle of life, literally, the soul of the flesh, that is, it is the seat of the animal life of the body. "It is the fountain of life," says Harvey; "the first to live, the last to die, and the primary seat of the animal soul; it lives and is nourished of itself, and by no other part of the human body." In consequence of possessing this character, it is to be reserved, to make an atonement for your souls upon the altar; for thus only blood became qualified for the purpose of atonement. The clause, for it is the blood that maketh an atonement for the soul, should be translated, for the blood maketh atonement by means of the soul, i.e; by means of the life which it contains. It is because the blood is the vehicle of the animal's life, and represents that life, that it serves to cover, or make atonement for, the soul of the offerer of the sacrifice, who presents it instead of his own life.