Joel C. Elowsky (PhD, Drew University) is professor of historical theology at Concordia Seminary in St. Louis, Missouri, where he also serves as the director of the Center for the Study of Early Christian Texts. He is the editor of two volumes on John's Gospel in the Ancient Christian Commentary on Scripture series, the editor of volumes on Cyril of Alexandria, Theodore of Mopsuestia, and Eusebius of Caesarea in the Ancient Christian Texts series, the editor for We Believe in the Holy Spirit in the Ancient Christian Doctrine series, and consulting editor for the Encyclopedia of Ancient Christianity.