Tim LaHaye is a New York Times bestselling author of more than 70 nonfiction books, many on biblical prophecy and end-times. He is the coauthor of the record-shattering Left Behind series and is considered one of America's foremost authorities on biblical end-times prophecy.

Bob Phillips, PhD, is a licensed counselor and the director at large for Hume Lake Christian Camps, one of the nation's largest youth camping programs. He is the best-selling author of over forty books.