Iskar,
Wow, the only resort I can think of right now is to repeat that which I posted to chriscase regarding explaining all that to a child who asks if there is a God. My proof is that of eating the pudding to see if He does exist which in my experience has been verified more times than not and I say that because there have been times when I have been skeptical in my own journey with Him and He expects that even from His own. To put it this way, my faith is built on what has been factually written both by prophets and non-prophets that was fulfilled in Jesus of Nazareth coming, dying and being raised from the dead that being witnessed by so many. That is what is revealed to sinners whom God has called out from among others and it has happened on so many occasions over six thousand years as to be much more than just coincidence. It all runs just as had been written which gives credence to what becomes the faith of a believer.