Creation as Sacrament: Reflections on Ecology and Spirituality

The Desert Fathers: Sayings of the Early Christian Monks

John Climacus: From the Egyptian Desert to the Sinaite Mountain

The Practice of the Presence of God

In the Heart of the Desert: The Spirituality of the Desert Fathers and Mothers

Knowing God

Bartholomew: Apostle and Visionary

Contemplative Prayer

The Orthodox Church: An Introduction to Eastern Christianity

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

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

The Journey: Living by Faith in an Uncertain World

Let's Do Theology: Resources for Contextual Theology; completely updated and revised, Edition 2

Five Proofs of the Existence of God

Why I Believe: Straight Answers to Honest Questions about God, the Bible, and Christianity

Scripture Alone: Exploring the Bible's Accuracy, Authority and Authenticity

The Community of the Ark: A Visit to the Utopian Communities of Lanza del Vasto and His Disciples of Gandhi (20th Anniversary Edition)