Summa Theologica (All Complete & Unabridged 3 Parts + Supplement & Appendix + interactive links and annotations)

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

Aquinas: Basic Works

Zealot: The Life and Times of Jesus of Nazareth

Treatise on Law

The Cost of Discipleship

The Ways of God

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

The 'Summa Theologica' of St. Thomas Aquinas: Part 1, Questions L-LXXIV

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

Summa Theologica, Part III (Tertia Pars)

Learning Theology with the Church Fathers

On the Power of God

The Gnostic Bible: Revised and Expanded Edition

Commentary on Aristotle's Politics

Beyond Belief: The Secret Gospel of Thomas

On Evil

Becoming Divine: An Introduction to Deification in Western Culture

The Treatise on the Divine Nature: Summa Theologiae I 1-13

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