This past week an ABC News debate aired on "Nightline," which pitted popular theists against Internet atheists. While I'll have more to say about that battle of wits in my next article, it testifies to the growing number (30 million Americans) of those who profess there is no God. Add to that what I believe is possibly three times the number of functional atheists, those who believe in a God but practically don't show it, and America is facing a new religious horizon in which atheism is becoming a formidable foe. Though the majority of Americans continue to claim to...