This a brilliant point about the ark as a holy box no different from the personal family gods of other primitive religions. The belief in a tiny god grew into omnipresence as their priests wanted their God to be more powerful than all the other Gods their followers encountered. He has evolved from a boxed god in a pantheon of gods they worshipped, to a sky god, to a God that was everywhere, and now to a God that is outside of the universe and beyond space and time. I don’t know where his followers can evolve him from there without erasing his own fragile existence outside of all of definable reality. It has all of the hallmarks of evolution or of folklore like Paul Bunyan which has evolved through the collective will of inumeral story-tellers into an unrecognizable hero: a midget girl with a chainsaw.