Don't just read the question...read this brief intro as well...
One probability is, if a supreme being wanted to be acknowledged in any way, it would be. Automatically, completely and verifiably in a universal manner.
It certainly wouldn't "inspire" profits for prophets for transcribing esoteric, conflicting, cruel and often absurdly "holey" texts; which would then spawn countless sects who'd want to kill each other over the most minor of differences of interpretations of this nonsense.
If your only "intelligent" answer "there is no god" state it then move along. The subject of the question is examining possibilities, however improbable they may be.