William Graham Tullian Tchividjian (pronounced cha-vi-jin) is a Florida native, the new pastor of Coral Ridge Presbyterian Church in Fort Lauderdale, a visiting professor of theology at Reformed Theological Seminary, and a grandson of Billy and Ruth Graham. A graduate of Columbia International University (philosophy) and Reformed Theological Seminary in Orlando, Tullian is the author of Do I Know God? Finding Certainty in Life’s Most Important Relationship (Multnomah), Unfashionable: Making a Difference in the World by Being Different (Multnomah) and Surprised by Grace: God's Relentless Pursuit of Rebels (Crossway). Tullian is also a contributing editor to Leadership Journal. He speaks at conferences throughout the U.S. and his sermons are broadcast daily on the radio program Godward Living.