The Universe in the Image of Imago Dei: The Dialogue between Theology and Science as a Hermeneutics of the Human Condition

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

God, Humanity, and the Universe: At the Crossroads of Christian Theology, Modern Cosmology, and Astrobiology

Zealot: The Life and Times of Jesus of Nazareth

The Sense of the Universe: Philosophical Explication of the Theological Commitment in Modern Cosmology

The Cost of Discipleship

Knowing God

Essential Gnostic Scriptures

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

The Orthodox Church: An Introduction to Eastern Christianity

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

Beyond Form Criticism: Essays in Old Testament Literary Criticism

Understanding the Iglesia Ni Cristo: What They Really Believe and How They Can Be Reached

The Doctrines That Divide: A Fresh Look at the Historic Doctrines That Separate Christians

Lady in Waiting: Becoming God's Best While Waiting for Mr. Right

Learning Theology with the Church Fathers

On Acquisition of the Holy Spirit: Teachings on Prayer, Asceticism, and Union with God

The Gnostic Bible: Revised and Expanded Edition