Even the Apostles were willing to admit that in spite of everything they believed they knew, Jesus knew more. Our own logic may seem perfectly sound to us, but God's understanding is infinitely greater than our own--he knows perfectly what we haven't even considered yet. He knows principles that would change our understanding. The gross inadequacy of our own understanding makes relying exclusively on ourselves illogical.
We are always subject to error, thus we must be humble enough to say that in spite of all worldly or personal wisdom, we will believe what God says is true. Peter was told he was blessed not because he had done the most in-depth scholarly review of religious literature, but because God himself had told Peter what was true. Rarely in religious scholarly articles can one read: "God has witnessed to me that [concept X] is true." Yet without this claim, the Christian/non-Christian argument is relegated to who is the most educated religious scholar in the room.
The most important question for a religious scholar is "Has God witnessed to me that this is true?"