Authors

Anees Zaka (DMin, Westminster Theological Seminary) is the founder and director of Church without Walls and founder and president of the Biblical Institute for Islamic Studies, both in Philadelphia, Pennsylvania. He is coauthor of Muslims and Christians at the Table. 

Geoffrey M. Ziegler (PhD, Wheaton College) is senior pastor of Trinity Presbyterian Church (PCA) in Hinsdale, Illinois.

Daniel R. Zuidema (PhD, Wake Forest University) is professor of chemistry and chair of the chemistry department at Covenant College in Lookout Mountain, Georgia, where he has taught since 2005.

Samuel M. Zwemer (1867–1952) became professor of missions at Princeton Theological Seminary in 1929. This followed a career as a missionary in the Middle East, where he spread the gospel among Muslims. He wrote more than fifty books, most of them about Islam.