This brief treatise explores the common threads to psychoanalytic thought and theological theory. It uses a psychoanalytic lens to examine Judeo/Christian concepts of individual will, consciousness and the unconscious, and the apparent confounding idea of sin. What is new is that the definition of sin is revealed as a psychoanalytic translation of acting-out. Focusing on the behavior of acting-out it illuminates ideas that are part of Western cultural tradition providing insights to those interested in the psychology, and its history and philosophy. As such, it is a highly relevant work for psychologists, psychiatrists, and psychoanalysts, as well as for a comparative study of psychoanalytic and theological intersecting structures.