Theology from the Great Tradition

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

Zealot: The Life and Times of Jesus of Nazareth

Authentic Cosmopolitanism: Love, Sin, and Grace in the Christian University

The Cost of Discipleship

A Global Church History: The Great Tradition through Cultures, Continents and Centuries

The Gospel According to Jesus: What Is Authentic Faith?

Essential Gnostic Scriptures

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

The Cross: Crucified with Christ, and Christ Alive in Me

Test Your Faith

The New Testament in Its World: An Introduction to the History, Literature, and Theology of the First Christians

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

Words of Warning (Annotated, Updated Edition): For Those Wavering Between Belief and Unbelief

Believe and Be Saved [Annotated, Illustrated]: Or, Around the Wicket Gate

Is Your Christianity Working?

Learning Theology with the Church Fathers

Where I Am: Heaven, Eternity, and Our Life Beyond

The Gnostic Bible: Revised and Expanded Edition