Mark Galli is the managing editor of "Christianity Today." He has worked as a Presbyterian pastor and is the author of a several books including Francis of Assisi and His World. James S. Bell Jr. is the owner of Whitestone Communications and has served as executive editor of Moody Press and director of religious publishing at Doubleday. He is co-author of "The Complete Idiot's Guides" to the Bible, the Book of Revelation, and the Reformation and Protestantism. He also serves as editor of the "Christian Family Guide" series from Alpha Books.