What is the basis upon which believers must accept the authority of Scripture and the inspiration of Scripture? The author argues that the main basis should be in Scripture's own witness. In the process, the claim by the Roman Catholic church for tradition as a source of authority in the believer's life is refuted based on Scripture. The author also makes the point that the canon was not fixed by the authority of human councils at Hippo or at Carthage, an argument that the Roman Catholic tries to advance as support for the decisions at the Council of Trent.