Gary McIntosh is professor of Christian ministry and leadership at Talbot School of Theology, Biola University, and president of Church Growth Network. He has served more than twelve hundred churches in t more than eighty denominations.
Alan McMahan is associate professor of intercultural studies at Biola University. A former missionary in Indonesia, Alan has worked with churches in North America and on the Pacific Rim, and has taught missiology, church growth, leadership, organizational development, and evangelism. He has also served as vice president of Alliance Theological Seminary in Nyack, New York; and academic dean at the King's College in Manhattan, New York.