To the unstructured reader the book of Isaiah can be rather confusing–it seems to be composed of poems and narratives combined haphazardly not by one, but by several authors. Even scholars disagree on its authorship, dating, structure, and meaning. William Holladay intends this book to be a study guide for lay people and students. In an attempt to answer the perplexing questions raised by reading Isaiah. Throughout the book, Professor Holladay affirms the theological unity within Isaiah, while discerning and emphasizing the variety of voices found there. Although there were several Isaiahs, each writing with his specific world situation in mind, the total picture is of a prophetic tradition which recognizes that God was king of Israel.