ill bring back another topic:
adam and eve...

so they got two sons, who got themselves two women and...
wait...
what women? their mother?
no cant be incest is forbidden by god...

maybe eve had two daughters? ah.. inces is forbidden by god...

so the only conclusion is: they had sex with lilim, (children of lilith, first wife of adam who was kicked out of the paradise, google for her) who were demons, thus they created BAD people...

and this is stade where in teh bible??? nowhere? how come?-.-