If we interpret every dream, whim, and everything else as from God we run into the same problem. The number one reason I'll give you is what unfolded in the Garden of Eden in Genesis. God literally walked there - Adam and Eve did not even need the dreams and visions - and yet they still believed the enemy with God himself having told them not to do something. Satan puts on a convincing front. So can a well-meaning but totally erroneous person.
II Corinthians 11:14
And no wonder, for even Satan disguises himself as an angel of light.
We like to think we always know the difference, but we don't. Humanity has proven itself quite capable in that department.
I understand some reason for the argument of following the letter too closely to subvert anything else God would do. However, when you throw the whole thing out and make remarks about it being inspired - yet not quite - then you open the door for the interpretations of man. (We have volumes and volumes of those that some religions like to tack on - talk about Pharisee!) Either God handed us a book that tells about himself and a relationship or otherwise we just need to do like the remaining religions of the world and make up our own way. There seem to be enough of those for my tastes.
As far as the assertion that Paul didn't know his work would become Scripture - well what do we really know? That's a cop-out poor argument at best. The funny thing is, Peter said something quite different. (And yes, I will scold someone who claims to come from a church founded directly by the guy as "the church.")
II Peter 3:15-16
And count the patience of our Lord as salvation, just as our beloved brother Paul also wrote to you according to the wisdom given him, as he does in all his letters when he speaks in them of these matters. There are some things in them that are hard to understand, which the ignorant and unstable twist to their own destruction, as they do the other Scriptures.
So, we can play games or we can simply let the Scriptures testify and stand upon their own - which they do quite well. Jesus Christ, the same yesterday, today, and tomorrow. We have been given a book to read - and either we listen to the book and work it out with God (because God's not going to tell you something that conflicts with something else he said, clearly) or we just make it up as we go.
