Before his passing in 2016, Tim LaHaye was 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 still considered one of America's foremost authorities on biblical end-times prophecy.

Beverly LaHaye (www.cwfa.org) is the bestselling author of the Seasons Series (with Terri Blackstock) and The Act of Marriage (with her husband, Tim). She is the founder and chairwoman of Concerned Women for America and shares a daily devotional commentary on the nationally syndicated radio show Concerned Women Today. She and her husband live in southern California.

Mike Yorkey is the author, co-author, editor, or collaborator of one hundred books. He has written for The Los Angeles Times travel section, Skiing, Tennis Week, World Tennis, City Sports, and Racquet. He lives in Encinitas, California.