The answer is actually quite simple - he married his sister who simply happens not to be mentioned in the Bible. But, isn't it immoral to marry your sister? Yes, it is today, because if siblings marry each other they are very liable to have deformed children, and that, of course, would be unfair to the children. However, these deformities are the result of genetic defects in our DNA. From a biblical worldview, we conclude that these defects are the result of sin and not a part of God's original creation which was "very good" (Genesis 1:31). These defects have come about as a result of mutations which have been accumulating in our gene pool since the fall of Adam and Eve. Granting these points, the DNA of Cain and his wife who were the generation just after Adam and Eve was assuredly much less likely to cause deformities than is our DNA today, even when we don't marry close relatives.
Did Adam and Eve have any daughters? Most assuredly! Genesis 5:4 states: "And the days of Adam after he had begotten Seth were eight hundred years: and he begat sons and daughters."
Page last modified: 2025.12.08




