When this book was begun in late November 2013, the intent was to write a commentary on chapter five of Paul's letter to the church at Ephesus. But about fifty pages into that endeavor, it became clear that the book was not going in that direction. For one thing, his letter to that church had not even been mentioned in those pages. For another, the focus up to that point had been on Paul's missionary journeys. The reason for those problems was that...