Since about 95% of the human race is spiritual, I would say that more than likely, most slave owners were probably God-fearing men. That doesn't really mean a whole lot because you can say that about virtually ANYTHING. Most people who saved the lives of others were believers in God... Most people who sacrificed their own life for others were believers in God. Most people who adopt cats are believers in God. Hell... Most people who voted for Obama are believers in God!
A lot of good god did those slaves for hundreds of years. But guess who used god to keep them in their places? That's right, their slave owners. Idiot.
True Atheists Are 0.07% of the Federal Prison Population, Threatening Fact for Christian Fundamentalists | Alternet