As far as I have read in the Bible, there is no evidence to say that Adam and Eve's children reproduced with one another, nor that Noah's grandchildren reproduced with one another. If the possibility of God creating other humans from the dust, for Adam and Eve's children, and Noah's grandchildren to mate with, and it just wasn't written about does not contradict the Word, why isn't this theory more commonly assumed rather than a theory that intermarrying siblings was once sanctioned by God? Especially if in other parts of the Bible, God makes it a point to mention that incest is not permissible without mentioning a reason why (as far as I know). Is intermarrying a sibling is now only forbidden because of possible genetic issues taking place?
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