28. Moses mentions not Abel, for he had died without an heir and is presented to us as an example of the resurrection of the dead. Neither is Cain mentioned, who because of his sin was cut off from the true Church.
29. Scripture says nothing of what Adam and Eve did during the one hundred years. Some of our writers add a hundred years longer Adam should have lived with Eve before Cain slew his brother Abel, which makes Adam two hundred and thirty years of age when Seth was born. It seems to me plausible that the godly parents passed one hundred years in sorrow and mourned the great dishonor that befell their family. After Adam was expelled from paradise did he first beget children, sons and daughters, who were like him, and Abel was perhaps thirty years of age when he was slain. It appears the children were not much younger than their parents, who were not born, but created.
30. I believe, accordingly, that the godly parents indulged their grief, and abstained from connubial intercourse. This abstinence, however, was not maintained with the intent which the Jews fable, who absurdly affirm that Adam vowed perpetual chastity, like our monks, and that he would still have kept his vow had he not been commanded by an angel from heaven to live together with his wife. Such a story as this is only fit to be told to a Roman pontiff of the age of forty, who alone is worthy of listening to such fables. No, Adam was not so wicked as thus to refuse the gift and command of God! Such abstinence would have been taking vengeance on himself for the grief he had endured, and it would have meant to reject the gift of that blessing which God had been pleased to leave to nature even in its fallen state.
Moreover, this was a matter not left in the power of Adam. As Moses has clearly shown, God had created him a male. He had, therefore, need of a female, or wife, because the instinct of procreation was implanted in his nature by God the Creator, himself. If therefore Adam abstained, he did so for a reason only, intending to return to his Eve after giving vent to his grief for a time.
31. Moses here expressly adds, concerning Adam, that he "begat a son in his own likeness, after his image." Theologians entertain various opinions as to the real meaning of those expressions. The simple meaning is, that Adam was created "in the image" and "after the likeness" of God, or that he was the image of God, created, not begotten; for Adam had no parents. But in this "image of God" Adam continued not; he fell from it by sin. Seth, therefore, who was afterwards born, was begotten, not after the image of God, but after the image of his father Adam. That is, he was altogether like Adam; he resembled his father Adam, not only in his features, but he was like him in every way. He not only had fingers, nose, eyes, carriage, voice, and speech, like his father, but he was like him in everything else pertaining to body and soul, in manners, disposition, will and other points. In these respects Seth did not bear the image of God which Adam possessed originally, and which he lost; but he bore the likeness of Adam, his father. But this likeness and image were not of God by creation, but of Adam by generation.