Faith becomes like Spiritual eyes.
That is, we do not live in this world through natural powers, but by the supernatural powers from God's Spirit within us. James is a great book of the New Testament. Written after the time of Christ W.C. Fields was a life long agnostic who was discovered reading a Bible on his death bed. This is so misunderstood that many people seek spiritual things from the wrong source. The rise of these, is a result of a fall of biblical literacy.