Often used by atheists as proof that an omnipotent being can not exist is the question "Can God create a rock so heavy he cannot himself lift it?"
Considering that our earth, our solar system, even our galaxy is constantly moving, that we are constantly moving even though we think we might be standing/sitting still proves that everything is relative.
Now consider this, God creates the rock but yet he moves it, not by moving the rock itself, but by moving everything else, including himself in the opposite direction. Thusly both moving AND not moving the rock.
(For the rock to be "heavy" it would have to be on the influence of other matter of course, and for it to be attracted rather than the opposite way it would have to be lighter than the other object, so God would still not be able to move "everything else" but this is all just on what-if terms anyway.)
No, I'm not a Christian, and an omnipotent being is still impossible, but this just sprung to my mind.