2000 yrs ago, we didn’t have Sigmund Freud. We didn’t have all of these teachings regarding the unconscious guilt, protection mechanisms, the ego, and the like. A Course in Miracles utilizes the teachings of psychology, the teachings and terminology of education and learning, and Additionally, it employs Christian terminology. https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw