motto of the Reformation is inscribed on each side: post tenebras lux—after darkness, light. This phrase refers not only to the unveiling and liberation of the Scriptures—which were made available to the common people during the Reformation—but also to the loss and recovery of the most important biblical doctrine there is: the doctrine of justification by faith alone. This was the primary and central issue of the Protestant Reformation. During the dispute between the Protestants and the Roman Catholics,