My Bible says Cain went to the the land of "Not" Nod and found a wife. It does not say God created this land. Cain went on to create a nation. That would take more people then Cain and his wife. Yes Seth was born but that's another male. No where in my Bible do they have a daughter. So that throws incest out. The really big riddle is if God has been around forever and will be around forever. What made him suddenly decide to make the whole universe. He must have been sitting in the dark for a very long time. Of course my Bible was originally written in 1611 then updated in 1769. Of course I believe every book written during that time frame. What comes across is the land of Nod was a land or country not just the dwelling place of Cains future wife. My Bible is full of strange quandaries and the people who teach religion (any religion) seem to have unfathomable answers to all are questions. I really enjoy their responses.