To Barth, one of this century's most influential theologians, theology should never be an end in itself. Instead, it should be ''nothing other than sermon preparation.'' Now, in this new translation by Geoffrey Bromiley and Donald Daniels, students can meet and wrestle with Barth's homiletical definitions and ideas on sermon preparation, including his understanding of the ways preachers should interpret Scripture. Barth presented this material as seminar lectures in Bonn in 1932-33. 144 pages, paper from Westminster.