I've read some books where it seemed the author had no purpose in writing. When that's the case, I'm glad if I can discover it early, so I don't invest too much time in a meaningless search. In some instances, however, I've been slow to recognize the problem, perhaps because I've been looking so earnestly for the author's point that I didn't realize he was without one.  No such charge can be made against Luke, the Greek physician who gave us the Gospel which bears his name. He knew why he was writing, and he was obviously excited about his assignment. 

In a sense, you and I can feel that we are eavesdropping when we read this Gospel. Luke addresses himself, in the opening paragraph, to someone named Theophilus. We don't know who this was. Some say he was a friendly Roman official who had …