How to select which supernatural to believe?

[R00tKiT]

There's an exception that unmines the initial premise. What about the prophet/prophetess themselves? By your logic they could not consider the God's revelation to them (a religious experience) as verification of God's existence. Ergo, why shouldn't anyone believe his or or her own religious experiences as equally, if not more valid than, the special revelation claims of others. Independent reasons, no?

Again, who said the prophets considered their experience as a verification of God's existence? It was really awkward back then, a dozen of centuries ago, to deny or even doubt God's existence -and it still is, atheists just have more sophisticated excuses-. And this was true even for ordinary people. They needed guidance from God, not confirmation that He exists.

And why do we need One True Prophet when we have been endowed by our Creator with the intelligence to recieve wisdom through a variety of theological speculations, mythology, and narratives, each according to the Light he or she is able to recieve and the latent wisdoms within each text?

I don't remember having said there has to be one true prophet, Islam acknowledges thousands of true prophets of God, who preached the same essential message: submission to God, and only one God.

So if your question is why we need prophets in the first place, my answer would be : just look around, in this forum for example, literally everyone has some personal take on the core metaphysical questions : God, the afterlife, the soul, etc. Since these opinions are logically incompatible, at least 99% of them must be wrong. 

It's clear that people aren't that good at theological speculation, after all. I think you already know that philosophy and discussion of deep theological issues isn't for everyone, and even elite theologians or philosophers sometimes defend silly ideas. Surely, an omnibenevolent God wouldn't communicate His message through conflicting opinions of theologians that most people don't even understand. And let's not forget that modern literature in the philosophy of religion uses modal logic, bayesian probability, and sometimes set theory. It shouldn't be that tough to find adequate justification for belief in God, if there is any..? 

Compare that to the Islamic Prophet's or to Jesus's teachings, they are simple and straightforward, and they present an independent miracle for their prophethood (the miracle of the Qur'an in the case of Muhammad PBUH, and healing the blind and the lepers, or raising the dead in the case of Jesus PBUH).