What is Dualism and How Does It Relate to Christianity?

What are the main points of dualism? What does it support or reject in relation to Christianity? How does materialism relate to dualism? Find out more about this intriguing philosophy. Check out two supporting videos talked about in this video on dualism:
1. Fringe Pop 321 with Dr. Michael S. Heiser and Steve Bancarz: Lucid Dreaming, Astral Projection, and New Age
2. The next video in this sequence about Dualism: Does God Exist?