The Bible, according to Christian, teaches that the heart can’t really be trusted, because it is corrupted by sin. This is the biggest difference between Christian and Ignorance: Ignorance does not believe that sin has corrupted his heart that badly. Because of this, in Christian’s view, Ignorance cannot truly believe in Christ—because he does not see the depth of his personal need for Christ. He cannot, in other words, believe in Christ in an abstract, detached manner; the belief must be deeply personal.