of his own will. The heron [*Vulg.: herodionem], commonly called a falcon, signifies those whose "feet are swift to shed blood" (Ps. 13:3). The plover [*Here, again, the Douay translators
generic name for all plovers.], which is a garrulous bird, signifies the gossip. The hoopoe, which builds its nest on dung, feeds on foetid ordure, and whose song is like a groan, denotes worldly grief which works death in those who are unclean. The bat, which flies near the ground, signifies those who being gifted with worldly knowledge, seek none but earthly things. Of fowls and quadrupeds those alone were permitted which have the hind-legs longer than the forelegs, so that they can leap: whereas those were forbidden which cling rather to the earth: because those who abuse the doctrine of the four Evangelists, so that they are not lifted up thereby, are reputed unclean. By the prohibition of blood, fat and nerves, we are to understand the forbidding of cruelty, lust, and bravery in committing sin.
Reply Obj. 2: Men were wont to eat plants and other products of the soil even before the deluge: but the eating of flesh seems to have been introduced after the deluge; for it is written (Gen. 9:3): "Even as the green herbs have I delivered . . . all" flesh "to you." The reason for this was that the eating of the products of the soil savors rather of a simple life; whereas the eating of flesh savors of delicate and over-careful living. For the soil gives birth to the herb of its own accord; and such like products of the earth may be had in great quantities with very little effort: whereas no small trouble is necessary either to rear or to catch an animal. Consequently God being wishful to bring His people back to a more simple way of living, forbade them to eat many kinds of animals, but not those things that are produced by the soil. Another reason may be that animals were offered to idols, while the products of the soil were not.
The Reply to the Third Objection is clear from what has been said (ad 1).
Reply Obj. 4: Although the kid that is slain has no perception of the manner in which its flesh is cooked, yet it would seem to savor of heartlessness if the dam's milk, which was intended for the nourishment of her offspring, were served up on the same dish. It might also be said that the Gentiles in celebrating the feasts of their idols prepared the flesh of kids in this manner, for the purpose of sacrifice or banquet: hence (Ex. 23) after the solemnities to be celebrated under the Law had been foretold, it is added: "Thou shalt not boil a kid in the milk of its dam." The figurative reason for this prohibition is this: the kid, signifying Christ, on account of "the likeness of sinful flesh" (Rom. 8:3), was not to be seethed, i.e. slain, by the Jews, "in the milk of its dam," i.e. during His infancy. Or else it signifies that the kid, i.e. the sinner, should not be boiled in the milk of its dam, i.e. should not be cajoled by flattery.