The following is an email correspondence between Tim Keller, pastor of Redeemer Presbyterian in New York City, and David George Moore. Dave blogs at www.twocities.org Dear Tim, I have read several of your books and benefited greatly from each one.  I am also grateful for your willingness to do the Patheos/Jesus Creed interview with me. … Continue reading Tim Keller Answers: How Much Prep Time for a Sermon?