Unseen Warfare is a timeless spiritual manual on inner struggle, written by Lorenzo Scupoli and later adapted by Saints Nicodemus the Hagiorite and Theophan the Recluse for Orthodox readers. With practical, soul-stirring insights, this edition—lightly edited for clarity—guides readers through the daily battle against sin, pride, and despair. A classic of Eastern Christian spirituality, now available through Knights of Saint George Press for a new generation of spiritual warriors.