It was only the culmination point of this whole development when on April 18 [Luther] gave his famous answer in Worms: “Unless I am convinced by testimony from Scripture or evident reason (convictus testimoniis Scripturae aut ratione evidente)—for I believe neither the Pope nor the Councils alone, since it is established that they have often erred and contradicted themselves—I am conquered by the writings (i.e., passages from Scripture) cited by me, and my conscience is captive to the Word of God; recant I will and can nothing, since it is neither safe nor honest to do ought against conscience.” This once forever established the Sola Scriptura. (19)
*For additional information, source material, and details, please visit: Reading the Word of God – Introduction
