Monasticism: Its Ideals and History and the Confessions of St. Augustine

Zealot: The Life and Times of Jesus of Nazareth

Sources of the Apostolic Canon: with a Treatise on the Origin of the Readership and Other Lower Orders

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

The Letter from Rome to Corinth from the Era of Domitian: 1 Clement

The Cost of Discipleship

The Sayings of Jesus: The Second Source of St. Matthew and St. Luke

The Pilgrim's Progress: From This World to That Which is to Come

The Origin of the New Testament: and the most important consequences of the new creation

Learning Theology with the Church Fathers

Luke the Physician: The Author of the Third Gospel and the Acts of the Apostles

The Gnostic Bible: Revised and Expanded Edition

Outlines of the History of Dogma

Beyond Belief: The Secret Gospel of Thomas

Bible Reading in the Early Church

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

The Date of the Acts and the Synoptic Gospels

Becoming Divine: An Introduction to Deification in Western Culture

History of Dogma, Volume 7

Signs of Life: 40 Catholic Customs and Their Biblical Roots