A Religious Question

There is a verse in a Godspell song that goes: "God endowed us with sense and intellect. God endowed us with reason we neglect. But despite the abolition by the current inquisition of any intuition that they don't choose, when it comes to God I find I can't believe that he'd design a human being with a mind he's not supposed to use." I find this a very meaningful problem with a doctrine of redemption earned only through faith. I have a mind made by God. It is, on the whole, a logical, searching mind. It requires proof before reaching unquestioned conclusions. And yet, the same God who made this mind requires that I set it aside and believe simply on the say so of a book and its interpreters. That seems to be a paradox of redemption through faith.

There is another scene in Godspell (I should probably say it is from the Bible, but I know it from Godspell) which raises a similar issue. In it, a rich man is cast down to hell when Lazarus is in Paradise. The rich man asks that if he cannot be saved that at least God personally tell his family what they need to do for salvation. Jesus says something to the effect of "God sent Moses and the prophets who tell you what you need to do. If your family won't believe them, why would they believe me?" That always seemed to me to be quite a cop out by Jesus. If some guy tells me he knows God's will, I think of Oral Roberts and Pat Robertson. But if GOD was to personally tell me his will, that would be much more convincing. Heck, God didn't send some schmo to tell him what God wanted, he showed up himself as a burning bush.

So my question is: Where am I wrong theologically?