Jewish and Christian Apocalypses: Schweich Lectures, 1913

Cold-Case Christianity: A Homicide Detective Investigates the Claims of the Gospels

Two Lectures on the Gospels

The Cost of Discipleship

Christian Beginnings: Three Lectures

Zealot: The Life and Times of Jesus of Nazareth

The Religion of the Manichees: Donnellan Lectures for 1924

The Gnostic Bible: Revised and Expanded Edition

The Gospel History and Its Transmission

Beyond Belief: The Secret Gospel of Thomas

The Earliest Sources for the Life of Jesus

Becoming Divine: An Introduction to Deification in Western Culture

Early Eastern Christianity: St. Margaret's Lectures, 1904, on the Syriac-Speaking Church

A Concise History of the Catholic Church (Revised Edition)

The Old Latin and the Itala: with an Appendix containing the Text of the S. Gallen Palimpsest of Jeremiah

What It Means to Be Protestant: The Case for an Always-Reforming Church

Evangelion Da-Mepharreshe: Volume 1

Challenging the Traditional Interpretations of Justification by Faith, Part 1

Saint Athanasius, the Father of Orthodoxy

The Great Heresies