Dr. Klein earned an MA from McMaster University and a PhD from the University of Notre Dame. The study of the early Church Fathers has been central to Dr. Klein's formation, and she is passionate about introducing people to the Catholic intellectual tradition, particularly to St. Augustine, whose holistic understanding of the truths of the Faith is an inexhaustible resource. Early Christian art, liturgy, and the lives of the saints—the places where theology is lived out and expressed in the life of the Church—are her sources of inspiration when teaching or conducting research. Dr. Klein lives in Colorado and teaches full-time at the Augustine Institute Graduate School of Theology.

Dr. Sehorn earned an MA in Early Christian Studies and a PhD in the History of Christianity from the University of Notre Dame following completion of a BA in History at Arizona State University. John has a deep fascination with the theology of the Fathers of the Church and is focused on their scriptural exegesis. While at Notre Dame, Dr. Sehorn's dissertation focused on Origen of Alexandria’s homilies on Ezekiel; he remains very interested in patristic theology and exegesis, as well as biblical studies and medieval theology. John now lives in Colorado, where he teaches full-time at the Augustine Institute Graduate School of Theology.

Michael  Barber is associate professor of Sacred Scripture and Theology at the Augustine Institute Graduate School of Theology. He holds a doctorate from Fuller Theological Seminary, where he wrote a dissertation on the historical Jesus and the Temple in Jewish eschatological expectations. He has authored a number of books, the most recent being Paul, A New Covenant Jew: Rethinking Pauline Theology (Eerdmans, 2019), co-authored with Brant Pitre and John Kincaid, and Salvation: What Every Catholic Should Know (Augustine Institute, 2019).

Dr. Barber speaks at parishes and Catholic events, giving talks on the Bible and the life of the Church. He lives in Aurora, Colorado, with his wife, Kimberly, and their six children.