At its primary, A Class in Miracles is just a channeled function, and its roots are shrouded in mystery. Helen Schucman, a scientific psychiatrist, and Bill Thetford, a research psychologist, collaborated in the 1960s to transcribe the internal dictations that Schucman said to receive from an inner style she discovered as Jesus Christ. The process of getting and saving these messages spanned eight decades and triggered the three-volume book known as A Program in Miracles.