Genesis 4:16-17

Cain’s wife and city he built are mentioned in Genesis 4:16-17. This brings us to the most common question asked about the Bible “Where did Cain get his wife?” The answer is so simple that most people never consider it. She was his sister. While such inbreeding would a problem today, do to the high number of mutations siblings have in common it would not have been a problem in earlier generations.