Glen Robinson, PhD, is the award-winning author of 22 books, including 52 Things to Do on Sabbath; If Tomorrow Comes; Not My Son, Lord; The Champion series; and the Foundation series, which he coauthors with Céleste Perrino-Walker. He is a communication professor at South-western Adventist University in Keene, Texas, where he lives with his wife, Shelly. You can visit him at his website: glenchen.com.