Susan DeVries has made a career out of being a wife, mother, and supervising editor of every word Mark has ever written. Over the past twenty-three years, Susan has partnered with Mark in providing premarital counseling and leading marriage retreats and classes for couples. Mark and Susan have three children and live in middle Tennessee.
Bobbie Wolgemuth is a Bible teacher and the author or co-author of several books, including Mom's Bible: God's Wisdom for Mothers and the four-book Gold Medallion bestselling series Hymns for a Kid's Heart with Joni Eareckson Tada. She is also the coauthor of Couples of the Bible with her husband, Robert. Married in 1970, the Wolgemuths have two married daughters, two sons-in-law, and five grandchildren. They live in central Florida.