John Rottman is the Associate Professor of Preaching at Calvin Theological Seminary. John spent five years working in a psychiatric hospital and it was during that time that he felt a call to the pastorate, but he wasn’t so sure about preaching. This changed during his time in seminary. While writing his first sermon at Calvin Theological Seminary, he felt strongly that this was another piece of his calling. It is with a strong theological training, and understanding of the role of the Holy Spirit in preaching, that John now equips students to bring proclaim the gospel through the medium of preaching.