102. But, I ask, why is not complaint made also of the men, or why are not the daughters of God included in this complaint? He says merely that they "saw the daughters of men." It was surely for this reason, that the holy generation of Seth had received the peculiar injunction to beware of fellowship with the Cainites, inasmuch as they had been excluded from the true Church, and to mingle with them neither socially through marriage, nor ecclesiastically through worship, for the righteous should avoid every occasion of offense.
103. In prohibiting marriage with the Cainites it was the chief purpose of the pious fathers to maintain their generation pure; for daughters bring into the houses of their husbands the views and manners of the fathers. Thus, we read of Solomon in the Book of the Kings that he was led astray through a woman who was a stranger; and thus Jezebel introduced the wickedness of the Syrians into the kingdom of Israel.
104. The holy fathers saw the same would come to pass in their generation; therefore, after they were separated from the Cainites through the divine command, they resolved that the sons of the holy generation should not marry the daughters of men. The daughters of the race of the righteous could more readily be restrained from marriage with the Cainites, while the sons were independent and headstrong.
105. In this way Moses wishes to show the trouble began from the time the sons of God joined themselves to the daughters of men, seeing that they were fair. The sons of men who were proud and strong and passionately given to pleasure, without doubt despised the plain maidens of the pious race who had been reared by the holy patriarchs not delicately, but simply and modestly, being arrayed in homely garb. There was hence no necessity of making a law also for the maidens, inasmuch as they were in any case neglected by the noble Cainites.
106. If you study the history of nations you will find that women have been the occasion for the overthrow of the strongest kingdoms. Well known is the disgrace of Helen. The sacred writings demonstrate also that woman occasioned the fall of the whole human race. This, however, should be mentioned without reflection upon the sex, for we have a command, "Honor thy father and thy mother," Ex 20, 12. Likewise, "Husbands, love your wives," Col 3, 19. It is true that Eve was the first to pluck the apple; however, she first sinned by idolatry and fell from the faith, which faith, as long as it is in the heart, controls also the body; but when it has departed from the heart, the body serves sin. Guilt is not peculiar to sex but to sin, which man has in common with woman.
107. Thus Moses gives an account of the prevailing unrighteousness and lust. But he gives the reader to understand that, before sin was committed against the second table of the Law, the first had been violated, and the Word of God treated with contempt. Otherwise the sons of God would have obeyed the will of their pious parents forbidding marriage with those outside the Church.