This classic Eastern Orthodox Christian text on repentance and confession is appearing for the first time in English. The call to repentance and confession of sins has been at the heart of the Christian Gospel since the preaching of Saint John the Forerunner and Christ Himself (Mat. 3:2, 4:17). It is the foundation of apostolic preaching (Mark 6:12) and the hallmark of Orthodox Christianity. And yet, in our day, when sin is regularly glorified as...