Joel Baden is Professor of Hebrew Bible at Yale University and is the author of The Historical David:  The Real Life of An Invented Hero.   David is portrayed in the Hebrew Scriptures as one who had a heart for God.  The Psalms are credited to him.  But the real life guy was ambitious and ruthless.  Dr. Baden reads between the lines to uncover a David far more human and thus more interesting than the idealized character of the Bible.