What is wrong with history apart from divine written Revelation?

"The history of philosophy began with naturalism, and so far as this volume is concerned it ends with naturalism. The Presocratic naturualism dissolved into Sophism, from which a metaphysics arose; and the metaphysics lost itself in a mystic trance. Then under the influence of an alien source, Western Europe appealed to a divine revelation. In the sixteenth century one group put their complete trust in revelation, while another development turned to unaided human reason. This latter movement has now abandoned its metaphysics, its rationalism, and even the fixed truths of naturalistic science. It has dissolved into Sophism. Does this mean that philosophers and cultural epochs are nothing but children who pay their fare to take another ride on the merry-go-round? Is this Nietzsche's eternal recurrence? Or, could it be that a choice must be made between skeptical futility and a word from God? To answer this question for himself, the student, since he cannot ride very fast into the future and discover what a new age will do, might begin by turning back to the first page and pondering the whole thing over again. This will at least stave off suicide for a few days more." - Gordon H. Clark, Thales to Dewey, Pg. 533 - 534

The whole point of Clark's work comes down to this that Philosophy unaided by Divine Revelation knows nothing. We see the fact that philosophy without the Bible alone (The word of God alone) conjures up several different ideas and views as time goes on. These ideas, to say the least, are wrong. This does not mean that no human being apart from Scripture alone cannot know some things that are helpful; however, it does mean that man apart from Scripture alone cannot know the truth. Truth is the reality of the world, truth is eternal, truth is God. It is God who is truth, who is eternal. We know God by Scripture alone.