KENNON L. CALLAHAN, --researcher, professor, and pastor--is one of today's most sought-after church consultants. He has worked with thousands of congregations around the world and has helped tens of thousands of church leaders and pastors through his dynamic workshops and seminars. Author of many books, he is best known for his groundbreaking study Twelve Keys to an Effective Church, which has formed the basis for the Mission Growth Movement, a widely acclaimed program for church renewal. Callahan has earned the B.A., M.Div., S.T.M., and Ph.D. degrees. His doctorate is in Systematic Theology.