Then how can you test the authenticity of a prophet? By waving your hands while chanting "Tu-tu-tu-tu"? (DW & I have seen this.) By whether or not you get shivers? Or feel good about it? Or do you just hand off responsibility to someone who claims they have discernment, and trust and hope that they do not have an ulterior motive, or are themselves deceived?
False prophets will come up with all sorts of excuses for why their prophecies fail, including "Oh, it's a mystery", and "You need to understand it spiritually", or some such non-sense. Look up Millerites, or Helen G. White, or Harold Camping. Or going 'way back, Montanus.
--Rich
"Esse quam videri"