Apostles’ Creed begins with the statement “I believe.” Then the believer goes on to summarize in broad strokes the extent of that belief. The Holy Spirit does not call us to faith in general, but to faith in particular—to faith in the person and work of Jesus Christ. If, as Romans 3:20–28 and other passages teach, a person is justified by faith alone, this question of understanding is vital. Christian leaders of the sixteenth-century Reformation understood this. They carefully defined what is