Annette Safstrom is a senior consultant, speaker, and trainer with Ministry Architects and has served in children's ministry for over thirty years, including as director of a rapidly growing children's ministry in Texas. She speaks at a variety of children's ministry events, including the Children's Pastors Conference and Group's KidMin Conference. After graduating from Bible college with a certification in children's ministry, Annette earned a bachelor's degree in psychology from Texas A&M University and a master's in research psychology from Southern Methodist University. She and her husband, Kevin, have two children.

Mark DeVries (MDiv, Princeton Theological Seminary) is the founder of Ministry Architects, a consulting team that helps churches and ministry organizations build sustainable ministries for children, youth, young adults, and entire congregations. He served for twenty-eight years as associate pastor for youth and their families at First Presbyterian Church in Nashville, Tennessee. He has trained youth workers on five continents and has taught courses or been a guest lecturer at a number of colleges and seminaries. DeVries is the author of Sustainable Youth Ministry and Family-Based Youth Ministry, coauthor of The Most Important Year in a Woman's Life/The Most Important Year in a Man's Life, and he has been a contributing writer for Josh McDowell's Youth Ministry Handbook, Starting Right, and Reaching a Generation for Christ. In addition, his articles and reviews have been published in a variety of journals and magazines. He and his wife, Susan, have four grown children.