Robert C. Greer is an adjunct professor of theology at both Judson University and Liberty University. He is a graduate of the Sacramento Bible Institute, received his M.A. in theological and biblical studies at Wheaton College and a Ph.D. in theology at Marquette University. He is also the author of Mapping Postmodernism: A Survey of Christian Options, Qur'an Revealed: A Christian Critique, Leadership Secrets of Muhammad, What the Qur'an Reveals, DaVinci's Code Exposed and Faith and Life: Facing the Challenges of Multiculturalism.