2000 years in the past, we didn’t have Sigmund Freud. We didn’t have all these teachings about the unconscious guilt, defense mechanisms, the ego, and the like. A Course in Miracles uses the teachings of psychology, the teachings and terminology of instruction, and What's more, it uses Christian terminology. https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw