2000 years back, we didn’t have Sigmund Freud. We didn’t have all of these teachings with regards to the unconscious guilt, defense mechanisms, the ego, and the like. A Course in Miracles employs the teachings of psychology, the teachings and terminology of schooling, and Additionally, it uses Christian terminology. https://mnobookmarks.com/story20005519/detailed-notes-on-a-course-in-miracles