Meister Eckhart and the Beguine Mystics: Hadewijch of Brabant, Mechthild of Magdeburg, and Marguerite Porete

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

Living Buddha, Living Christ 20th Anniversary Edition

The Continuum History of Apocalypticism

Wicca: A Guide for the Solitary Practitioner

Jewish Mystical Leaders and Leadership in the 13th Century

On Guard: Defending Your Faith with Reason and Precision

Seeking Allah, Finding Jesus: A Devout Muslim Encounters Christianity

Illuminati: The Secret Society That Hijacked the World (The History of One of the World's Most Notorious Secret Societies)

A History of Religious Ideas, Volume 2: From Gautama Buddha to the Triumph of Christianity

Is the Bible God's Word?

The Lifetimes When Jesus and Buddha Knew Each Other: A History of Mighty Companions

Become What You Are: Expanded Edition

The Holy Science

Faith Is for Weak People: Responding to the Top 20 Objections to the Gospel

Babylon Religion: How a Babylonian Goddess Became the Virgin Mary

Answering Jihad: A Better Way Forward

No God but One: Allah or Jesus? (with Bonus Content): A Former Muslim Investigates the Evidence for Islam and Christianity

Barahin-e-Ahmadiyya - Parts I & II: Arguments in Support of the Holy Quran and the Prophethood of the Holy Prophet Muhammad