Although I do enjoy the Bible for its moral values and ways to live a good life. I often ask myself why is there so many contradictions? I'll only name one for the sake of bandwidth.
Q: If Adam and Eve, Cain and Able were the only people on this planet at that specific time. After Cain slew Able and was marked to wonder the world so all the people could see his mark, then where did all the people come from? I have always wondered that.