Bede : And when men began to multiply on the earth and had daughters, the sons of God saw the daughters of men that they were fair; and they took wives for themselves of all whom they chose. "Men" means the offspring of Cain, who, turned away from the view of divine will, subjected their mind solely to human affairs: "sons of God", however, refers to those who were born from the lineage of Seth, who, following the example of their father's devotion, preserved with an inviolate mind the service they owed to God. By this distinction, the Lord in the Gospel also separated His disciples from the rest, saying, "Whom do men say that the Son of Man is?" (Matthew 16:13). And having received their answer, He said, "But who do you say that I am?" evidently wanting them to be understood as superior to men and to be counted among those of whom He Himself said: "I have said, You are gods; and all of you are children of the Most High" (Psalms 82:6). Some manuscripts have "angels of God" instead of "sons of God," which is obviously taken in the same sense. For the angels of God are rightly called righteous men, who according to the measure of their capacity strive to live an angelic life on earth: to such the Apostle says, "But you are not in the flesh, but in the Spirit" (Romans 8:9). And again: "For our conversation is in heaven" (Philippians 3:20). Therefore, it seems that the generation of the lineage of Seth, as long as it was not mingled with the offspring of Cain, preserved the norm of its chastity untainted; but after it fell into concupiscence and joined the cursed offspring of wicked women, it also began to share in the curse with the corrupted decency of its sober mind. Hence, in the law it is diligently and carefully commanded to the sons of Israel, not to intermarry with foreigners, because, it says, "his daughter will seduce your son to follow their gods" (Deuteronomy 7:4). — Commentary on Genesis (Hexaemeron) Book of Enoch : And it came to pass when the children of men had multiplied that in those days were born unto them beautiful and comely daughters. And the angels, the children of the heaven, saw and lusted after them, and said to one another: 'Come, let us choose us wives from among the children of men and beget us children.' And Semjaza, who was their leader, said unto them: 'I fear ye will not indeed agree to do this deed, and I alone shall have to pay the penalty of a great sin.' And they all answered him and said: 'Let us all swear an oath, and all bind ourselves by mutual imprecations not to abandon this plan but to do this thing.' Then sware they all together and bound themselves by mutual imprecations upon it. And they were in all two hundred; who descended in the days of Jared on the summit of Mount Hermon, and they called it Mount Hermon, because they had sworn and bound themselves by mutual imprecations upon it. And these are the names of their leaders: Samlazaz, their leader, Araklba, Rameel, Kokablel, Tamlel, Ramlel, Danel, Ezeqeel, Baraqijal, Asael, Armaros, Batarel, Ananel, Zaqiel, Samsapeel, Satarel, Turel, Jomjael, Sariel. These are their chiefs of tens. And all the others together with them took unto themselves wives, and each chose for himself one, and they began to go in unto them and to defile themselves with them, and they taught them charms and enchantments, and the cutting of roots, and made them acquainted with plants. And they became pregnant, and they bare great giants, whose height was three thousand ells: Who consumed all the acquisitions of men. And when men could no longer sustain them, the giants turned against them and devoured mankind. And they began to sin against birds, and beasts, and reptiles, and fish, and to devour one another's flesh, and drink the blood. Then the earth laid accusation against the lawless ones. And Azazel taught men to make swords, and knives, and shields, and breastplates, and made known to them the metals of the earth and the art of working them, and bracelets, and ornaments, and the use of antimony, and the beautifying of the eyelids, and all kinds of costly stones, and all colouring tinctures. And there arose much godlessness, and they committed fornication, and they were led astray, and became corrupt in all their ways. Semjaza taught enchantments, and root-cuttings, 'Armaros the resolving of enchantments, Baraqijal (taught) astrology, Kokabel the constellations, Ezeqeel the knowledge of the clouds, Araqiel the signs of the earth, Shamsiel the signs of the sun, and Sariel the course of the moon. And as men perished, they cried, and their cry went up to heaven... And He answered and said to me, and I heard His voice: 'Fear not, Enoch, thou righteous man and scribe of righteousness: approach hither and hear my voice. And go, say to the Watchers of heaven, who have sent thee to intercede for them: "You should intercede" for men, and not men for you: Wherefore have ye left the high, holy, and eternal heaven, and lain with women, and defiled yourselves with the daughters of men and taken to yourselves wives, and done like the children of earth, and begotten giants (as your) sons? And though ye were holy, spiritual, living the eternal life, you have defiled yourselves with the blood of women, and have begotten (children) with the blood of flesh, and, as the children of men, have lusted after flesh and blood as those also do who die and perish. Therefore have I given them wives also that they might impregnate them, and beget children by them, that thus nothing might be wanting to them on earth. But you were formerly spiritual, living the eternal life, and immortal for all generations of the world. And therefore I have not appointed wives for you; for as for the spiritual ones of the heaven, in heaven is their dwelling. And now, the giants, who are produced from the spirits and flesh, shall be called evil spirits upon the earth, and on the earth shall be their dwelling. Evil spirits have proceeded from their bodies; because they are born from men and from the holy Watchers is their beginning and primal origin; they shall be evil spirits on earth, and evil spirits shall they be called. [As for the spirits of heaven, in heaven shall be their dwelling, but as for the spirits of the earth which were born upon the earth, on the earth shall be their dwelling.] And the spirits of the giants afflict, oppress, destroy, attack, do battle, and work destruction on the earth, and cause trouble: they take no food, but nevertheless hunger and thirst, and cause offences. And these spirits shall rise up against the children of men and against the women, because they have proceeded from them... From the days of the slaughter and destruction and death of the giants, from the souls of whose flesh the spirits, having gone forth, shall destroy without incurring judgement -thus shall they destroy until the day of the consummation, the great judgement in which the age shall be consummated, over the Watchers and the godless, yea, shall be wholly consummated." And now as to the watchers who have sent thee to intercede for them, who had been aforetime in heaven, (say to them): "You have been in heaven, but all the mysteries had not yet been revealed to you, and you knew worthless ones, and these in the hardness of your hearts you have made known to the women, and through these mysteries women and men work much evil on earth." Say to them therefore: " You have no peace."' — 1 Enoch, Chapters 6-8, 15, 16 Book of Jubilees : And it came to pass when the children of men began to multiply on the face of the earth and daughters were born unto them, that the angels of God saw them on a certain year of this jubilee, that they were beautiful to look upon; and they took themselves wives of all whom they chose, and they bare unto them sons and they were giants. And lawlessness increased on the earth and all flesh corrupted its way, alike men and cattle and beasts and birds and everything that walks on the earth -all of them corrupted their ways and their orders, and they began to devour each other, and lawlessness increased on the earth and every imagination of the thoughts of all men (was) thus evil continually. And God looked upon the earth, and behold it was corrupt, and all flesh had corrupted its orders, and all that were upon the earth had wrought all manner of evil before His eyes. And He said that He would destroy man and all flesh upon the face of the earth, which He had created. But Noah found grace before the eyes of the Lord. And against the angels whom He had sent upon the earth, He was exceedingly wroth, and He gave commandment to root them out of all their dominion, and He bade us to bind them in the depths of the earth, and behold they are bound in the midst of them, and are (kept) separate. And against their sons went forth a command from before His face that they should be smitten with the sword, and be removed from under heaven. And He said 'My spirit shall not always abide on man; for they also are flesh and their days shall be one hundred and twenty years'. And He sent His sword into their midst that each should slay his neighbour, and they began to slay each other till they all fell by the sword and were destroyed from the earth. And their fathers were witnesses (of their destruction), and after this they were bound in the depths of the earth for ever, until the day of the great condemnation, when judgment is executed on all those who have corrupted their ways and their works before the Lord. And He destroyed all from their places, and there was not left one of them whom He judged not according to all their wickedness. — Book of Jubilees Chapter 5, sections 1-11, Charles' 1913 translation Clement of Alexandria : The mind is led astray by pleasure, and the virgin center of the mind, if not disciplined by the Word, degenerates into licentiousness and reaps disintegration as reward for its transgressions. An example of this for you is the angels who forsook the beauty of God for perishable beauty and fell as far as heaven is from the earth. — The Instructor Book 3 Ephrem the Syrian : [Moses] called the sons of Seth "sons of God," those who, like the sons of Seth, had been called "the righteous people of God." The beautiful daughters of men whom they saw were the daughters of Cain who adorned themselves and became a snare to eyes of the sons of Seth. Then Moses said "they took to wife such of them as they chose," because when "they took" them, they acted very haughtily over those whom they chose. A poor one would exalt himself over the wife of a rich man, and an old man would sin with one who was young. The ugliest of all would act arrogantly over the most beautiful. — COMMENTARY ON Genesis 6.3.1 Eusebius of Caesarea : But when they did nothing of this kind, but tried to make supplication to the evil daemons by a foul and licentious life and unseemly words, and by feeding on raw flesh, and rending victims asunder, and by human sacrifices, how was it even possible that doing such deeds, and pursuing practices pleasing to the wicked, they should be received as friends by the Supreme God, or by the divine Powers subject to Him, or by any good beings at all? But in fact it is manifest to all that he who practises the things that are dear to the wicked can never be a friend of the good. So then it was not to gods, nor yet to good daemons, but only to the wicked, that those of whom I have spoken paid worship. And this argument is still further confirmed by Plutarch, in the passage where he says that the mythical narratives told as concerning gods are certain tales about daemons, and the deeds of Giants and Titans celebrated in song among the Greeks are also stories about daemons, intended to suggest a new phase of thought. Of this kind then perhaps were the statements in the Sacred Scripture concerning the giants before the flood, and those concerning their progenitors, of whom it is said, 'And when the angels of God saw the daughters of men that they were fair, they took unto them wives of all that they chose,' and of these were born 'the giants the men of renown which were of old.' For one might say that these daemons are those giants, and that their spirits have been deified by the subsequent generations of men, and that their battles, and their quarrels among themselves, and their wars are the subjects of these legends that are told as of gods. — Preparation for the Gospel, BOOK V, CHAPTER IV Irenaeus : And for a very long while wickedness extended and spread, and reached and laid hold upon the whole race of mankind, until a very small seed of righteousness remained among them: and illicit unions took place upon the earth, since angels were united with the daughters of the race of mankind; and they bore to them sons who for their exceeding greatness were called giants. And the angels brought as presents to their wives teachings of wickedness, in that they brought them the virtues of roots and herbs, dyeing in colours and cosmetics, the discovery of rare substances, love-potions, aversions, amours, concupiscence, constraints of love, spells of bewitchment, and all sorcery and idolatry hateful to God; by the entry of which things into the world evil extended and spread, while righteousness was diminished and enfeebled. Until judgment came upon the world from God by means of a flood, in the tenth generation from the first-formed (man); Noah alone being found righteous. — The Demonstration of the Apostolic Preaching, Sections 18-19 Irenaeus : Since the Son of God is always one and the same, He gives to those who believe on Him a well of water [springing up] to eternal life, but He causes the unfruitful fig-tree immediately to dry up; and in the days of Noah He justly brought on the deluge for the purpose of extinguishing that most infamous race of men then existent, who could not bring forth fruit to God, since the angels that sinned had commingled with them, and [acted as He did] in order that He might put a check upon the sins of these men, but [that at the same time] He might preserve the archetype, the formation of Adam. And it was He who rained fire and brimstone from heaven, in the days of Lot, upon Sodom and Gomorrah, "an example of the righteous judgment of God," that all may know, "that every tree that bringeth not forth good fruit shall be cut down, and cast into the fire." — Against Heresies 4.36.4 John Cassian : 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;" 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...From these sons of Seth then and daughters of Cain, as we have said, there were I 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. — Conference 8, CHAPTER XXI Josephus : For many angels of God accompanied with women, and begat sons that proved unjust, and despisers of all that was good, on account of the confidence they had in their own strength; for the tradition is, that these men did what resembled the acts of those whom the Grecians call giants. But Noah was very uneasy at what they did; and being displeased at their conduct, persuaded them to change their dispositions and their acts for the better: but seeing they did not yield to him, but were slaves to their wicked pleasures, he was afraid they would kill him, together with his wife and children, and those they had married; so he departed out of that land. — Antiquities of the Jews - Book I, Chapter 3, Section 1 Julius Africanus ((as quoted by George Syncellus, AD 810)) : When men multiplied on the earth, the angels of heaven came together with the daughters of men. In some copies I found "the sons of God." What is meant by the Spirit, in my opinion, is that the descendants of Seth are called the sons of God on account of the righteous men and patriarchs who have sprung from him, even down to the Saviour Himself; but that the descendants of Cain are named the seed of men, as having nothing divine in them, on account of the wickedness of their race and the inequality of their nature, being a mixed people, and having stirred the indignation of God. But if it is thought that these refer to angels, we must take them to be those who deal with magic and jugglery, who taught the women the motions of the stars and the knowledge of things celestial, by whose power they conceived the giants as their children, by whom wickedness came to its height on the earth, until God decreed that the whole race of the living should perish in their impiety by the deluge. — Fragment 2 Justin Martyr : God, when He had made the whole world, and subjected things earthly to man, and arranged the heavenly elements for the increase of fruits and rotation of the seasons, and appointed this divine law-for these things also He evidently made for man-committed the care of men and of all things under heaven to angels whom He appointed over them. But the angels transgressed this appointment, and were captivated by love of women, and begat children who are those that are called demons; and besides, they afterwards subdued the human race to themselves, partly by magical writings, and partly by fears and the punishments they occasioned, and partly by teaching them to offer sacrifices, and incense, and libations, of which things they stood in need after they were enslaved by lustful passions; and among men they sowed murders, wars, adulteries, intemperate deeds, and all wickedness. Whence also the poets and mythologists, not knowing that it was the angels and those demons who had been begotten by them that did these things to men, and women, and cities, and nations, which they related, ascribed them to god himself, and to those who were accounted to be his very offspring, and to the offspring of those who were called his brother), Neptune and Pluto, and to the children again of these their offspring. For whatever name each of the angels had given to himself and his children, by that name they called them. — The Second Apology, Chapter V Nemesius of Emesa : Of the incorporeal beings, only angels fell away, and not all of them, but some only, that inclined to things below and set their desire on things of earth, withdrawing themselves from their relations with things above, even from God. — ON THE NATURE OF MAN 58 Philo of Alexandria : "And it came to pass when there began to be many men upon the earth, that daughters also were born to Them." [Genesis 6:1] I think it here worth while to raise the question why, after the birth of Noah and his sons, our race increased to a degree of great populousness. But, perhaps, it is not difficult to explain the cause of this; for it always happens if anything appears to be rare that its contrary is found exceedingly numerous. (2) Therefore, the good disposition of one displays the evil disposition of myriads, and the fact of those things which are done in accordance with art, and science, and virtue, and beauty, being few, shows how incalculable a number of things devoid of art, and of science, and of justice, and, in short, utterly worthless, lie concealed beneath. (3) Do you not see that in the universe, also, the sun, being one body, by his shining forth dissipates the thick and dense darkness which is shed over earth and sea? With great propriety, therefore, the generation of the just Noah and his sons is represented as bringing into existence a great number of unjust persons; for it is by the contrary that it is especially the nature of contraries to be known. (4) And no unjust man at any time implants a masculine generation in the soul, but such, being unmanly, and broken, and effeminate in their minds, do naturally become the parents of female children; having planted no tree of virtue, the fruit of which must of necessity have been beautiful and salutary, but only trees of wickedness and of the passions, the shoots of which are womanlike. (5) On account of which fact these men are said to have become the fathers of daughters, and that no one of them is said to have begotten a son; for since the just Noah had male children, as being a man who followed reason, perfect, and upright, and masculine, so by this very fact the injustice of the multitude is proved to be altogether the parent of female children. For it is impossible that the same things should be born of opposite parents; but they must necessarily have an opposite offspring. — ON THE GIANTS