Tim Keller is one of the most successful pastors preaching in the world today. He preaches to 5,000 people every week at Redeemer Presbyterian Church in New York City. Here in the 4th of a series of talks to seminary students, he talks about the need to "preach to the heart." He expounds five points: one must preach affectionately, imaginatively, practically, wondrously and Christocentrically. I'm not a preacher but I found his talk informative and arresting.