However unconscious Luther himself may have been of the shift of emphasis that was taking place in him as the movement progressed, the historical observer has no difficulty in noting the change from the Luther who is endeavouring to sound the deeps of life itself, and whose religion is the creation of the inward stream of life within him; and the Luther who wanders far afield from experience, draws curious conclusions from unverified concepts, piles text on text as though heaven could be scaled by another Pelion on Ossa, and once more turns religion back to the cooled lava-beds of theology. He never could succeed in getting the God of his heart's glowing faith into the theologies which he laboriously builded. As soon as he started constructing he invariably fell back upon the building-material which had already been quarried, and which lay at hand. His experimental Faith discovered a God of all Grace, but his inherited _concept_ of God, the God of the Old Testament and of theology, was vastly different, and remained to the end unrevolutionized by his heart's insight. This background conception of God comes to extreme expression in his _De servo arbitrio_ ["The Unfree Will"] of 1525: "This is the acme of faith, to believe that God who saves so few and condemns so many is merciful; that He is just who at His own pleasure has made us necessarily doomed to damnation, so that . . . He seems to delight in the tortures of the wretched and to be more deserving of hatred than of love. _If by any effort of reason I could conceive how God, who shows so much anger and harshness, could be merciful and just, there would be no need of faith._" There could, in his thought, be no salvation for man, no hope, and no joy, until some way of escape was found from the stern judgments of this angry and wrathful God. This way of escape is found in what Luther calls "the Word of God," by which he means "the Gospel of God concerning His Son, incarnate, suffering, risen, and glorified."[13] {11} This Word of God is for him the sum total of "the promises that God is _for us_": "the pure Gospel" of a pardoning, forgiving God; the revelation in the Cross of Christ that no self-merit counts or is needed, but that on Christ's account God forgives the sinner and bestows His Grace upon him. Speaking theologically, Faith consists in believing in the God whom Christ has historically revealed--believing without any doubt that He will be and will do to us according to the things which are said of Him in "the Word of God." It must be said that for Luther himself, Faith was an "active, powerful thing," "a deliberate confidence in the grace of God," which made him "joyous and intrepid" and "for which he could die a thousand deaths";[14] but there was always an irresistible tendency in the Lutheran teaching for faith to drop to the lower level of doctrine, and to consist in the acceptance of a scheme of justification.