What is the author's style in Luther by John Osborne?

Luther does not have a strong narrative drive in the traditional sense; encompassing several decades, it does not tell the complete story behind Luther's protest. Alan Carter wrote in John Osborne that because Osborne is "weakest as a story-teller," he "makes the play resemble a medieval historical pageant, full of vivid theatrical moments." The play in its entirety shows explicit change in Luther's development of a more personal relationship with God and implicit change in the references to the transformation his beliefs have brought to Germany. The narrative drive focuses more on Luther's interior battles with his own lack of faith than exterior battles with church leaders.