In the light of these parallels the beliefs and customs of the Egyptians touching the pig are probably to be explained as based upon an opinion of the extreme sanctity rather than of the extreme uncleanness of the animal; or rather, to put it more correctly, they imply that the animal was looked on, not simply as a filthy and disgusting creature, but as a being endowed with high supernatural powers, and that as such it was regarded with that primitive sentiment of religious awe and fear in which the feelings of reverence and abhorrence are almost equally blended. The ancients themselves seem to have been aware that there was another side to the horror with which swine seemed to inspire the Egyptians. For the Greek astronomer and mathematician Eudoxus, who resided fourteen months in Egypt and conversed with the priests, was of opinion that the Egyptians spared the pig, not out of abhorrence, but from a regard to its utility in agriculture; for, according to him, when the Nile had subsided, herds of swine were turned loose over the fields to tread the seed down into the moist earth. But when a being is thus the object of mixed and implicitly contradictory feelings, he may be said to occupy a position of unstable equilibrium. In course of time one of the contradictory feelings is likely to prevail over the other, and according as the feeling which finally predominates is that of reverence or abhorrence, the being who is the object of it will rise into a god or sink into a devil. The latter, on the whole, was the fate of the pig in Egypt. For in historical times the fear and horror of the pig seem certainly to have outweighed the reverence and worship of which he may once have been the object, and of which, even in his fallen state, he never quite lost trace. He came to be looked on as an embodiment of Set or Typhon, the Egyptian devil and enemy of Osiris. For it was in the shape of a black pig that Typhon injured the eye of the god Horus, who burned him and instituted the sacrifice of the pig, the sun-god Ra having declared the beast abominable. Again, the story that Typhon was hunting a boar when he discovered and mangled the body of Osiris, and that this was the reason why pigs were sacrificed once a year, is clearly a modernised version of an older story that Osiris, like Adonis and Attis, was slain or mangled by a boar, or by Typhon in the form of a boar. Thus, the annual sacrifice of a pig to Osiris might naturally be interpreted as vengeance inflicted on the hostile animal that had slain or mangled the god. But, in the first place, when an animal is thus killed as a solemn sacrifice once and once only in the year, it generally or always means that the animal is divine, that he is spared and respected the rest of the year as a god and slain, when he is slain, also in the character of a god. In the second place, the examples of Dionysus and Demeter, if not of Attis and Adonis, have taught us that the animal which is sacrificed to a god on the ground that he is the god's enemy may have been, and probably was, originally the god himself. Therefore, the annual sacrifice of a pig to Osiris, coupled with the alleged hostility of the animal to the god, tends to show, first, that originally the pig was a god, and, second, that he was Osiris. At a later age, when Osiris became anthropomorphic and his original relation to the pig had been forgotten, the animal was first distinguished from him, and afterwards opposed as an enemy to him by mythologists who could think of no reason for killing a beast in connexion with the worship of a god except that the beast was the god's enemy; or, as Plutarch puts it, not that which is dear to the gods, but that which is the contrary, is fit to be sacrificed. At this later stage the havoc which a wild boar notoriously makes amongst the corn would supply a plausible reason for regarding him as the foe of the corn-spirit, though originally, if I am right, the very ******* with which the boar ranged at will through the corn led people to identify him with the corn-spirit, to whom he was afterwards opposed as an enemy.
The view which identifies the pig with Osiris derives not a little support from the sacrifice of pigs to him on the very day on which, according to tradition, Osiris himself was killed; for thus the killing of the pig was the annual representation of the killing of Osiris, just as the throwing of the pigs into the caverns at the Thesmophoria was an annual representation of the descent of Persephone into the lower world; and both customs are parallel to the European practice of killing a goat, cock, and so forth, at harvest as a representative of the corn-spirit.
Again, the theory that the pig, originally Osiris himself, afterwards came to be regarded as an embodiment of his enemy Typhon, is supported by the similar relation of red-haired men and red oxen to Typhon. For in regard to the red-haired men who were burned and whose ashes were scattered with winnowing-fans, we have seen fair grounds for believing that originally, like the red-haired puppies killed at Rome in spring, they were representatives of the corn-spirit himself that is, of Osiris, and were slain for the express purpose of ****** the corn turn red or golden. Yet at a later time these men were explained to be representatives, not of Osiris, but of his enemy Typhon, and the killing of them was regarded as an act of vengeance inflicted on the enemy of the god. Similarly, the red oxen sacrificed by the Egyptians were said to be offered on the ground of their resemblance to Typhon; though it is more likely that originally they were slain on the ground of their resemblance to the corn-spirit Osiris. We have seen that the ox is a common representative of the corn-spirit and is slain as such on the harvest-field.