I believe the Bible contains the revealed Word of God? Don't you?
I'm only saying that Paul's letters and story are part of the bible, and I don't see why they wouldn't be as reliable to you as anything else in the bible.
I believe the bible IS the revealed Word of God in it's entirety. Your statement implies that parts of the bible are not the Word of God and other parts are, something altogether different.
If not all the bible is inspired, how are we to know which parts are and aren't? A book that "contains" the Word would be of little value unless it had a directory of some kind to point out what part is divinely inspired and therefore infallible, and what is merely human wisdom and therefore open to error. I could not have faith in a bible as the foundation stone for my Christian belief system if it was open to question on the matter of who wrote what.