ROBERT WOLGEMUTH is the bestselling author of She Calls Me Daddy and Daddy@Work. He is also the founder of Wolgemuth & Associates, a literary representation agency. 

Bobbie Wolgemuth has been in the mothering business for over thirty years, raising two daughters to adulthood, and is the grandmother of five. She has been singing hymns since childhood and has performed internationally. She is the co-author of the Great Hymns of Our Faith series with her husband, Robert, Joni Eareckson Tada, and John MacArthur (Crossway). Her other books include With Love from Mom and The Most Important Year in a Woman’s Life.

Joni Eareckson Tada is CEO of Joni and Friends, a global ministry that serves the practical and spiritual needs of people with disabilities. She is also an artist and the author of numerous bestselling books, including Joni; A Place of Healing; and When God Weeps. Joni and her husband, Ken, reside in Calabasas, California.

John MacArthur is the pastor-teacher of Grace Community Church in Sun Valley, California, where he has served since 1969. He is known around the world for his verse-by-verse expository preaching and his pulpit ministry via his daily radio program, Grace to You. He has also written or edited nearly four hundred books and study guides. MacArthur is chancellor emeritus of the Master’s Seminary and Master’s University. He and his wife, Patricia, live in Southern California and have four grown children.