A Course in Miracles (also often called ACIM or even the Course) is usually a 1976 book by Helen Schucman. The underlying premise is usually that the greatest "miracle" may be the act of basically getting a full "awareness of love's presence" in someone's lifestyle. David Hoffmeister has traveled extensively https://www.youtube.com/channel/UCXpL4OXSmktqlP6_S5p5jIQ