About the Author
Zaka is the founder and director of Church Without Walls and founder and president of Biblical Institute for Islamic Studies. He has many years of experience ministering to Muslims overseas and in North America. He has done extensive research on Islam for his masters and doctoral degrees. He has Th.M. and D.Min. degrees from Westminster Theological Seminary.
Harvie M. Conn is professor of missions at Westminster Theological Seminary, Philadelphia, where he has served since 1972. He was a missionary in Korea from 1960 to 1972. His numerous books and articles include The American City and the Evangelical Church and Eternal Word and Changing Worlds: Theology, Missions, and Anthropology in Trialogue; he continues to edit Urban Mission.