Greg started out thinking he was too smart to become a Christian and ended up giving his life for the defense of the Christian faith. A central theme of Greg's speaking and writing is that Christianity—if it's properly understood and properly communicated—makes the most sense of the world as we find it.

Greg has spoken on more than 70 college and university campuses both in the U.S. and abroad and has hosted his own call-in radio show for 27 years advocating “Christianity worth thinking about.” An award-winning writer and best-selling author, Greg received his Masters in Philosophy of Religion and Ethics at Talbot School of Theology, graduating with high honors, and his Masters in Christian Apologetics with honors from Simon Greenleaf University. He is an adjunct professor in Christian apologetics at Biola University.