Preaching: it sounds like such a easy thing to do. All you have to do is step into the pulpit and talk for 20 minutes, right? Anyone who's ever stepped into that pulpit knows that preaching is anything but easy. Speaking a word from God that is grounded in the biblical witness, theologically responsible, and true to contemporary experience is one of the most difficult things one can do. Advice on how to do this is as old as preaching itself, and there...