That would be acceptable were it not for the fact that there are others who claim their holy books do the same.
One knows they are from God, when they are
There are countless examples of people making such claims, and an equally countless number that were shown to be unreliable and outright false.
Your argument is placing the entire faith in a testimony of a single person's subjective experience. Talk about making a leap of faith!
Joseph knew to listen to his dream and John knew to write down his vision
That's what the Bible says. And I am not denying it. It may very well be that righteous Joseph and blessed John really did "know" or believed they know (this is why Gnosticism persisted throughout the ages and apparently subsists among the Reformed!).
The problem is proving it, because, by itself, the Bible has no reliability whatsoever. Like all other "holy" books, it requires an a priori faith. IOW, you must already believe that everything in it is true to "prove" that it is true! Which is no proof at all.
That's being a "religious hypochondriac," FK! :)
That would be acceptable were it not for the fact that there are others who claim their holy books do the same.
So if others claim against the truth, then the truth is lessened, or becomes less knowable in your eyes?
The problem is proving it [that Joseph had a dream and John had a vision, both from God], because, by itself, the Bible has no reliability whatsoever.
In that case then by definition for you God's word has no inherent authority. Any authority you believe that small parts of the Bible have must have come from your men, not God. Some prefer to have authority in men and others recognize that all authority is in God.