Jack Levison holds the W. J. A. Power Chair of Biblical Hebrew and Old Testament Interpretation at Perkins School of Theology, Southern Methodist University and is the most competent scholar and clearest writer on the Holy Spirit that I have known, according to Eugene Peterson. A contributor to parade.com, relevant.com, and beliefnet.com, Jack has written Fresh Air: The Holy Spirit for an Inspired Life to wide acclaim. His writings have been translated into German, Spanish, and Korean.