The answer to the question raised.
Serenus: You have propounded two not unimportant questions, to which I will reply, to the best of my ability, in the order in which you have raised them. We cannot possibly believe that spiritual existences can have carnal intercourse with women. But if this could ever have literally happened how is it that it does not now also sometimes take place, and that we do not see some in the same way born of women by the agency of demons without intercourse with men? especially when it is clear that they delight in the pollution of lust, which they would certainly prefer to bring about through their own agency rather than through that of men, if they could possibly manage it, as Ecclesiastes declares: “What is it that hath been? The same that is. And what is it that hath been done? The same that is done. And there is nothing new that can be said under the sun, so that a man can say: Behold this is new; for it hath already been in the ages which were before us.” 1551 But the question raised may be resolved in this way. After the death of righteous Abel, in order that the whole human race might not spring from a wicked fratricide, Seth was born in the place of his brother who was slain, to take the place of his brother not only as regards posterity, but also as regards justice and goodness. And his offspring, following the example of their fathers goodness, always remained separate from intercourse with and the society of their kindred descended from the wicked Cain, as the difference of the genealogy very clearly tells us, where it says: “Adam begat Seth, Seth begat Enos, Enos begat Cainan, but Cainan begat Mahalaleel, but Mahalaleel begat Jared, Jared begat Enoch, Enoch begat Methuselah, Methuselah begat Lamech, Lamech begat Noah.” 1552 And the genealogy of Cain is given separately as follows: “Cain begat Enoch, Enoch begat Cainan, Cainan begat Mahalaleel, Mahalaleel begat Methuselah, Methuselah begat Lamech, Lamech begat Jabal and Jubal.” 1553 And so the line which sprang from the seed of righteous Seth always mixed with its own kith and kin, and continued for a long while in the holiness of its fathers and ancestors, untouched by the blasphemies and the wickedness of an evil offspring, which had implanted in it a seed of sin as it were transmitted by its ancestors. As long then as there continued that separation of the lines between them, the seed of Seth, as it sprang from an excellent root, was by reason of its sanctity termed “angels of God,” or as some copies have it “sons of God;” 1554 and on the contrary the others by reason of their own and their fathers wickedness and their earthly deeds were termed “children of men.” Though then there was up to this time that holy and salutary separation between them, yet after this the sons of Seth who were the sons of God saw the daughters of those who were born of the line of Cain, and inflamed with the desire for their beauty took to themselves from them wives who taught their husbands the wickedness of their fathers, and at once led them astray from their innate holiness and the single-mindedness of their forefathers. To whom this saying applies with sufficient accuracy: “I have said: Ye are Gods, and ye are all the children of the Most High. But ye shall die like men, and fall like one of the princes;” 1555 who fell away from that true study of natural philosophy, handed down to them by their ancestors, which the first man who forthwith traced out the study of all nature, could clearly attain to, and transmit to his descendants on sure grounds, inasmuch as he had seen the infancy of this world, while still as it were tender and throbbing and unorganized; and as there was in him not only such fulness of wisdom, but also the grace of prophecy given by the Divine inspiration, so that while he was still an untaught inhabitant of this world he gave names to all living creatures, and not only knew about the fury and poison of all kinds of beasts and serpents, but also distinguished between the virtues of plants and trees and the natures of stones, and the changes of seasons of which he had as yet no experience, so that he could well say: “The Lord p. 384 hath given me the true knowledge of the things that are, to know the disposition of the whole world, and the virtues of the elements, the beginning and the ending and the midst of times, the alterations of their courses and the changes of their seasons, the revolutions of the year and the disposition of the stars, the natures of living creatures and the rage of wild beasts, the force of winds, and the reasonings of men, the diversities of plants and the virtues of roots, and all such things as are hid and open I have learnt.” 1556 This knowledge then of all nature the seed of Seth received through successive generations, handed down from the fathers, so long as it remained separate from the wicked line, and as it had received it in holiness, so it made use of it to promote the glory of God and the needs of everyday life. But when it had been mingled with the evil generation, it drew aside at the suggestion of devils to profane and harmful uses what it had innocently learnt, and audaciously taught by it the curious arts of wizards and enchantments and magical superstitions, teaching its posterity to forsake the holy worship of the Divinity and to honour and worship either the elements or fire or the demons of the air. How it was then that this knowledge of curious arts of which we have spoken, did not perish in the deluge, but became known to the ages that followed, should, I think, be briefly explained, as the occasion of this discussion suggests, although the answer to the question raised scarcely requires it. And so, as ancient traditions tell us, Ham the son of Noah, who had been taught these superstitions and wicked and profane arts, as he knew that he could not possibly bring any handbook on these subjects into the ark, into which he was to enter with his good father and holy brothers, inscribed these nefarious arts and profane devices on plates of various metals which could not be destroyed by the flood of waters, and on hard rocks, and when the flood was over he hunted for them with the same inquisitiveness with which he had concealed them, and so transmitted to his descendants a seed-bed of profanity and perpetual sin. In this way then that common notion, according to which men believe that angels delivered to men enchantments and diverse arts, is in truth fulfilled. From these sons of Seth then and daughters of Cain, as we have said, there were born still worse children who became mighty hunters, violent and most fierce men who were termed giants by reason of the size of their bodies and their cruelty and wickedness. For these first began to harass their neighbours and to practise pillaging among men, getting their living rather by rapine than by being contented with the sweat and labour of toil, and their wickedness increased to such a pitch that the world could only be purified by the flood and deluge. So then when the sons of Seth at the instigation of their lust had transgressed that command which had been for a long while kept by a natural instinct from the beginning of the world, it was needful that it should afterwards be restored by the letter of the law: “Thou shalt not give thy daughter to his son to wife, nor shalt thou take a wife of his daughters to thy son; for they shall seduce your hearts to depart from your God, and to follow their gods and serve them.” 1557
Eccl. 1:9, 10.383:1552
Gen. v. 4-30.383:1553
Gen. iv. 17-21.383:1554
In Gen. vi. 2 the mss. of the LXX. fluctuate between ἄγγελοι τοῦ θεοῦ and υἱοὶ τοῦ θεοῦ. The interpretation of the passage which Cassian here rejects is adopted by Philo and Josephus, the book of Enoch, and several of the early fathers, including Justin Martyr, Tertullian, Clement of Alexandria, Lactantius and others. The explanation, which Cassian here gives, taking the “sons of God” of the Sethites, and the “daughters of men” of the line of Cain, is apparently first found in Julius Africanus (οἰ ἀπό τοῦ Σὴθ δίκαιοι), and is adopted among others by Augustine, De Civitate Dei, Book XV. xxiii., where the passage is fully discussed.383:1555
Ps. 82:6, 7.384:1556
Wis. vii. 17-21.384:1557
Deut. 8:3, Exod. 34:16, 1 Kings 11:2.