Onion. If Jesus died on the cross to amend for our past and future sins, and we are condemned to hell regardless of ANYTHING we do, what did he die for exactly?
Anyway,
OP. There is no physical proof of "god's" existence, at all. They can sway you with nicely phrased sentences and poems, but that's all there is to it. The only thing real about "god" is how this "idea" works on people's emotions, really all I'm going to say. :l