Let me give you a handle on that. Say the distance between the Earth and the sun is, oh, one centimeter. Mercury orbits the sun at a range of a toast… - Charles Stross

There can be only one true religion. Are you feeling lucky, believer?
Like the majority of ordinary British citizens, I used to be a good old-fashioned atheist, secure in my conviction that folks who believed—in angels and demons, supernatural manifestations and demiurges, snake-fondling and babbling in tongues and the world being only a few thousand years old—were all superstitious idiots. It was a conviction encouraged by every crazy news item from the Middle East, every ludicrous White House prayer breakfast on the TV. But then I was recruited by the Laundry, and learned better.
I wish I could go back to the comforting certainties of atheism; it’s so much less unpleasant than the One True Religion.
The truth won’t make your Baby Jesus cry because, sad to say, there ain’t no such Son of God. Moses may have taken two tablets before breakfast, but there was nobody home to listen to the prayers of the victims of the Shoah. The guardians of the Kaaba have got the world’s best tourism racket running, the Dalai Lama isn’t anybody’s reincarnation, Zeus is out to lunch, and you really don’t want me to start on the neo-pagans.
However, there is a God out there—vast and ancient and infinitely powerful—and I know the name of this God. I know the path you have to walk down to be one with this God. I know his secret rituals and the correct form of prayer and his portents and signs. I have studied the ancient writings of his prophets and followers in person, not simply relying on the classified digests in the CODICIL BLACK SKULL files and the background briefings for CASE NIGHTMARE GREEN.
I’m a believer. And like I said, I wish I was still an atheist. Believing I was born into a harsh, uncaring cosmos—in which my existence was a random roll of the dice and I was destined to die and rot and then be gone forever—was infinitely more comforting than the truth.
Because the truth is that my God is coming back.
When he arrives I’ll be waiting for him with a shotgun.
And I’m keeping the last shell for myself.

His Infernal Majesty leans towards me confidingly. “You have imposter syndrome,” He says, “but paradoxically, that’s often a sign of competence. Only people who understand their work well enough to be intimidated by it can be terrified by their own ignorance. It’s the opposite of Dunning-Kruger syndrome, where the miserably incompetent think they’re on top of the job because they don’t understand it.”

Truly the jaws of irony are agape!