Whereas the believer claims not only to KNOW there's a God, but which God is the real one. Not only that, they know the mind of God; they know what he wants. They know his plan, or at least claim they know he has a plan. They know his Son, they know his books. In fact, the believer actually claims to know the Creator on a personal level. Well, when they create God in their own image, it's pretty easy.