• 'Shack' opens doors, but critics call book 'scripturally incorrect'

Now, his first novel, The Shack- centered on dialogues between a miserable main character, Mack, and three unorthodox characterizations of the Holy Trinity - telescopes Young's transformation to a man spiritually reborn and aware every moment of God's love. It slams "legalistic" religions, denominations and doctrines. It barely even mentions the Bible.