A while back on 'the Merv Griffin Show,? the guest was a body builder. During the interview, Merv asked "Why do you develop those particular muscles"? The body builder simply stepped forward and flexed a series of well-defined muscles from chest to calf. The audience applauded. "What do you use all those muscles for"? Merv asked. Again, the muscular specimen flexed, and biceps and triceps sprouted to impressive proportions. "But what do you USE those muscles for"? Merv persisted. The body builder was bewildered. He didn't have an answer other than to display his well-developed frame. I was reminded that our spiritual exercises-Bible study, prayer, reading Christian books, listening to Christian radio and tapes-are also for a purpose. They're meant to strengthen our ability to build God's kingdom, not simply to improve our pose before an admiring audience.