Authors

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.

Abigail van der Velde was born and raised in North Carolina, lived in New York City, and then married a Dutchman and moved to the Netherlands, where she lived for eight years. With previous experience in journalism and editing, she now writes fiction. Johanna and Henriette Kuyper is her first novel.