Being a devotee of Francis Schaeffer, for whom the "propositional truth" of the scriptures was the cornerstone of all knowledge, I've always bristled at the contention, quite common these days among emergents and post-conservatives, that propositional truth is a false hope of the enlightenment. Always struck me as odd - isn't the statement "propositional truth is false" itself a proposition?
Many - I think most are well meaning - will say that revelation is not found in propositional statements about God, but in God's saving acts in history, that it is the Acts that are revelatory and not the verbal descriptions of them.
So I was tickled, when googling a different topic, to find this article by Evangelical Anglican Canon D.B. Knox, who I don't know much about, save that he was Principal of Moore Theological College, Sydney, Australia, from 1959-1985. The article is titled "PROPOSITIONAL REVELATION, THE ONLY REVELATION".