In his commentary on Thesis 20 of the Heidelberg Disputation Luther is obviously treating “works” as God’s works of creation; he even refers explicitly to Romans 1:20.8 Beginning with the discussion of Thesis 21, however, the matter is not so certain. There Luther says that the theology of glory “prefers works to suffering and glory to the cross.”9 On the basis of what precedes this statement one might again think of God’s works. But the sentence is ambiguous, and there is no doubt that the next