This study offers a fresh examination of the most significant of Luther's comments on the nature and use of Scripture, locating each in its literary and historical context.

It explores a series of connections in Luther's thoughts, analysing his scattered statements in terms of four categories reflected in his own terminology: inspiration, unity, clarity and sufficiency. In particular, it seeks to identify those elements which enable Luther to move with confidence between his statements about the authority of Scripture and his interpretative method.