In response to your prayer comment, Marco, I'd like to say that God can't (or doesn't) listen to the prayers of un-believers except for a prayer that you are praying because you want to be saved (like a saving prayer: whatever you call it). If you wanted a real test, you'd have to have real Christians praying, and make sure they're serious about what they're praying for. Praying is basically like "talking" to God. If you lie to God, he's probably not going to answer your prayer. So, if you just say "O Lord, please help ___" but you don't really mean it, there's quite a possiblity He won't help ___.

I was praying for Guardian and his family, just about every day, sincerely. And, Guardian's sister made it through. That's the power of prayer - though to just a small percent. God can do a lot more than that. Even if you say... well, Guardian's sister had good doctors operating on her: Well, who decided those doctors would be there? God!