What about the Invisible Pink Unicorn, a religion based around the existence of a contradiction of being invisible and pink?
The Invisible Pink Unicorn isn't a genuine religion devised in good faith. It's a poor man's version of New Atheist own-the-Christoids thought experiments like the Flying Spaghetti Monster, and effectively just a parodic version of Russell's teapot designed to annoy anyone who places faith in a deity in a manner that even John Dule would find unsuited to the entire premise.
On a more serious note, what about a universe where a deity exists but it isn’t a human one??? Imagine if the “chosen people” were some bug like aliens.