At their core, A Program in Miracles is really a channeled work, and its roots are shrouded in mystery. Helen Schucman, a clinical psychologist, and Bill Thetford, a study psychologist, worked in the 1960s to transcribe the inner dictations that Schucman said to get from an interior voice she determined as Jesus Christ. The method of getting and recording these communications spanned eight years and triggered the three-volume guide called A Class in Miracles.