Very Rev. Peter V. Armenio was ordained a priest of the Prelature of Opus Dei in 1980 and currently serves as the Vicar of Opus Dei for the Midwest (USA). Fr. Armenio received a doctorate in philosophy from the Pontifical University of the Holy Cross in 1996. He has served as the chaplain of Lexington Institute, Willows Academy, and Northridge Preparatory High School in the Archdiocese of Chicago and has worked in campus ministry for several years. He has written these books published by MTF: Our Moral Life in Christ (semester, complete course, and college editions), The History of the Church (semester and complete course editions), and The Mystery of Redemption and Christian Discipleship.