@Setanta,
That's a huge jump of history that Satan took over this planet 6000 years ago.
That's a wild guess when we understand that humans have inhabited this planet for 200,000 years. So, humans never sinned for the first 190,000 years - or so.
No wonder people of religion must have "faith." Their confusion about many things only explains why all religions are man-made.
It also doesn't explain why god/jesus didn't appear until 2000 years ago to save souls.