"Thus from the work of a great many persons, and at personal cost for some of them, the mystery of the Bible's origins had come to be addressed openly, and a working hypothesis had been formed. It was a remarkable stage in the Bible's history. Scholars could open the book of Genesis and identify the writing of two or even three authors on the same page. And there was also the work of the editor, the person who had cut up and combined the source documents into a single story; and so as many as four different persons could have contributed to producing a single page of the Bible. Investigators were now able to see that a puzzle existed and what the basic character of the puzzle was. But they still did not know who the authors of any of the four old source documents were, when they...