For I think I have perceived clearly from the Scriptures that, after He had brought in virginity, the Word did not altogether abolish the generation of children; for although the moon may be greater than the stars, the light of the other stars is not destroyed by the moonlight.
Let us begin with Genesis, that we may give its place of antiquity and supremacy to this Scripture. Now the sentence and ordinance of God respecting the begetting of children Gen. 1:28 is confessedly being fulfilled to this day, the Creator still fashioning man. For this is quite manifest, that God, like a painter, is at this very time working at the world, as the Lord also taught, “My Father works hitherto.” But when the rivers shall cease to flow and fall into the reservoir of the sea, and the light shall be perfectly separated from the darkness,—for the separation is still going on,—and the dry land shall henceforth cease to bring forth its fruits with creeping things and four-footed beasts, and the predestined number of men shall be fulfilled; then from henceforth shall men abstain from the generation of children. But at present man must cooperate in the forming of the image of God, while the world exists and is still being formed; for it is said, “Increase and multiply.” Gen. 1:28 And we must not be offended at the ordinance of the Creator, from which, moreover, we ourselves have our being. For the casting of seed into the furrows of the matrix is the beginning of the generation of men, so that bone taken from bone, and flesh from flesh, by an invisible power, are fashioned into another man. And in this way we must consider that the saying is fulfilled, “This is now bone of my bone, and flesh of my flesh.” Gen. 2:23
And this perhaps is what was shadowed forth by the sleep and trance of the first man, which prefigured the embraces of connubial love. When thirsting for children a man falls into a kind of trance, softened and subdued by the pleasures of generation as by sleep, so that again something drawn from his flesh and from his bones is, as I said, fashioned into another man. For the harmony of the bodies being disturbed in the embraces of love, as those tell us who have experience of the marriage state, all the marrow-like and generative part of the blood, like a kind of liquid bone, coming together from all the members, worked into foam and curdled, is projected through the organs of generation into the living body of the female. And probably it is for this reason that a man is said to leave his father and his mother, since he is then suddenly unmindful of all things when united to his wife in the embraces of love, he is overcome by the desire of generation, offering his side to the divine Creator to take away from it, so that the father may again appear in the son.
Wherefore, if God still forms man, shall we not be guilty of audacity if we think of the generation of children as something offensive, which the Almighty Himself is not ashamed to make use of in working with His undefiled hands; for He says to Jeremiah, “Before I formed you in the belly I knew you; ” Jeremiah 1:5 and to Job, “Did you take clay and form a living creature, and make it speak upon the earth? ” and Job draws near to Him in supplication, saying, “Your hands have made me and fashioned me.” Job 10:8 Would it not, then, be absurd to forbid marriage unions, seeing that we expect that after us there will be martyrs, and those who shall oppose the evil one, for whose sake also the Word promised that He would shorten those days? Mat. 24:22 For if the generation of children henceforth had seemed evil to God… for what reason will those who have come into existence in opposition to the divine decree and will be able to appear well-pleasing to God? And must not that which is begotten be something spurious, and not a creature of God, if, like a counterfeit coin, it is moulded apart from the intention and ordinance of the lawful authority? And so we concede to men the power of forming men. (Banquet of Ten Virgins, Discourse 2.1-2)