The only proof that a 'God' exists is when he actually SHOWS himself in physical form (that's God himself, not Jesus) to the whole world. And proves he is who he says he is with demonstrations of his powers to my satisfaction (i.e. he does whatever I say). But until he can do so, there's no such thing as a 'God'.

Religion is nothing more than a fairytale for adults. And stupid adults, at that.