One of my favorite books outside of the Bible is John Bunyan’s allegory, The Pilgrim’s Progress. Bunyan wrote this wonderful book while in prison for preaching without license from the Church of England. He was a 17th Century Baptist non-conformist preacher who was counted among the Puritans. The continuing appeal of this book, even into the 21st Century, is its inherent Christian authenticity. Through this authenticity we learn what real Christianity is and what it isn’t.