Nicene and Post-Nicene Fathers, Vol. V:
On Marriage and Concupiscence.: Chapter 26

Chapter 26 [XIII.]—The Child in No Sense Formed by Concupiscence.

But as he was speaking of Abraham and Sarah, he goes on to say: “If, indeed, you were to affirm that the natural use was strong in them, and there was no offspring, my answer will be: Whom the Creator promised, the Creator also gave; the child which is born is not the work of cohabitation, but of God. He, indeed, who made the first man of the dust, fashions all men out of seed. As, therefore, the dust of the earth, which was taken as the material, was not the author of man; so likewise that power of sexual pleasure which forms and commingles the seminal elements does not complete the entire process of man’s making, but rather presents to God, out of the treasures of nature, material with which He vouchsafes to make the human being.” Now the whole of this statement of his, except where he says, that the seminal elements are formed and commingled by sexual pleasure, would be correctly expressed by him were he only earnest in making it to defend the catholic sense. To us, however, who are fully aware what he strives to make out of it, he speaks indeed correctly in a perverse manner. The exceptional statement to the general truth, which I do not deny belongs to this passage, is untrue for this reason, because the pleasure in question of carnal concupiscence does not form the seminal elements. These are already in the body, and are formed by the same true God who created the body itself. They do not receive their existence from the libidinous pleasure, but are excited and emitted in company with it. Whether, indeed, such pleasure accompanies the commingling of the seminal elements of the two sexes in the womb, is a question which perhaps women may be able to determine from their inmost feelings; but it is improper for us to push an idle curiosity so far. That concupiscence, however, which we have to be ashamed of, and the shame of which has given to our secret members their shameful designation, pudenda, had no existence in the body during its life in paradise before the entrance of sin; but it began to exist “in the body of this death” after sin, the rebellion of the members retaliating man’s own disobedience. Without this concupiscence it was quite possible to effect the function of the wedded pair in the procreation of children: just as many a laborious work is accomplished by the compliant operation of our other limbs, without any lascivious heat; for they are simply moved by the direction of the will, not excited by the ardour of concupiscence.