I can’t prove the friendship of my friend. When I experience it, I don’t need to prove it. When I don’t experience it, no proof will do. If I tried to put his friendship to the test somehow, the test itself would queer the friendship I was testing. So it is with the Godness of God.
The five so-called proofs for the existence of God will never prove to unfaith that God exists. They are merely five ways of describing the existence of the God you have faith in already.
Almost nothing that makes any real difference can be proved. I can prove the law of gravity by dropping a shoe out the window. I can prove that the world is round if I’m clever at that sort of thing—that the radio works, that light travels faster than sound. I cannot prove that life is better than death or love better than hate. I cannot prove the greatness of the great or the beauty of the beautiful. I cannot even prove my own free will; maybe my most heroic act, my truest love, my deepest thought are all just subtler versions of what happens when the doctor taps my knee with his little rubber hammer and my foot jumps.
Faith can’t prove a damned thing. Or a blessed thing either.