4] Now, since it is necessary to believe this, and it cannot be otherwise acquired or apprehended by any work, law, or merit, it is clear and certain that this faith alone justifies us as St. Paul says, Rom. 3:28: For we conclude that a man is justified by faith, without the deeds of the Law. Likewise 3:26: That He might be just, and the Justifier of him which believeth in Christ.
5] Of this article nothing can be yielded or surrendered [nor can anything be granted or permitted contrary to the same], even though heaven and earth, and whatever will not abide, should sink to ruin. For there is none other name under heaven, given among men whereby we must be saved, says Peter, Acts 4:12. And with His stripes we are healed, Is. 53:5. And upon this article all things depend which we teach and practice in opposition to the Pope, the devil, and the [whole] world. Therefore, we must be sure concerning this doctrine, and not doubt; for otherwise all is lost, and the Pope and devil and all things gain the victory and suit over us.