This is a quote I particularly enjoyed from the book “The God Beyond Belief: In Defence of William Rowe’s Evidential Argument from Evil ” by Nick Trakakis. Actually it is quoted in the aforementioned book from a holocaust survivor in “The faith and Doubt of Holocaust Survivors” by Reeve Robert Brenner. It is an excellent lay men’s example of the argument from horrendous evil (something Rowe discusses at length).
“This is what I think: We were sent forth by humanity, by mankind, although it was not even aware it was doing so, to find out once and for all if there’s a God. That’s the meaning of the camps. It was meant to bring Him out into the open if He existed at all. Nothing else or less significant could have brought Him out into the open, to respond and to act and show His face. It was a stupendous test; unconscious and unintentional but a test nevertheless. And God failed the test and proved His own nonexistence. And I, as part of the experiment, stopped believing in Him altogether. Just as certain laboratory experiments are conclusive and incontrovertible, so was this.
If He wouldn’t come out then, during those times, when?
Now when man writes his history he can say there was a vast laboratory experiment conducted by man during the 1940’s to see if there is a God or not. The conclusion was no God exists. There were guinea pigs in the test and other kinds of experimental animals, but mainly guinea pigs- Jews of course. I know. I was one of them.”
Think seriously about this quote the next time you think to yourself that God answered your prayers for a good parking spot, a job promotion, or any other comparatively frivolous thing.

