Gregory Op HeilleGregory Heille, OP, is professor of preaching and evangelization and director of the Doctor of Ministry in Preaching at Aquinas Institute of Theology in St. Louis. A past president of the Academy of Homiletics and the Catholic Association of Teachersof Homiletics, he is the author of The Preaching of Pope Francis (2015). Emmanuel Diaz is a master of divinity student and Aquinas Scholar at Aquinas Institute of Theology. Read More Read Less