By any standard, this is a classic of Christian theology. Composed by St. Athanasius in the fourth century, it expounds with simplicity the theological vision defended at the councils of Nicaea and Constantinople: that the Son of God himself became "fully human, so that we might become god."

The Chapters on Theology is one of Maximus’ most eclectic writings. In this short piece, Maximus discusses many diverse themes, including God's relation to the cosmos, monastic discipline and life, scriptural difficulties, and his vision of the consummated universe in relation to the incarnate Word of God. The work is arranged into 200 “chapters,” which are often pithy pearls of wisdom that monks could learn from the respected figure of an elder or abbot. Chapters tend to address a range of issues monks would face in the course of their spiritual progress.

Christian tradition often seems to give only grudging approval to married life, particularly its sexual aspect. In these sermons of St John Chrysostom, we find an important corrective to this view.

The seven works in this volume (some translated for the first time) explore the great human mystery of death and the promise of eternal life. They present—along with On the Soul and the Resurrection (PPS 12)—a vision that is consistent, philosophically profound, and characteristic of Gregory’s wider theology.

The centuries after the Protestant Reformation brought about a radical reinterpretation of the epistles of St. Paul, disconnected from any historical reality. But Paul operated, during his entire life, as a faithful Pharisee within the Roman Jewish world. In Saint Paul the Pharisee: Jewish Apostle to All Nations, Fr. Stephen De Young surveys Paul’s life and writings, interpreting them within the Holy Tradition of the Orthodox Church.

Jacob of Serug was born at Curtem on the Euphrates, ca. 451. Very little is known of his life. He probably studied at the school of Edessa. He became a monk and priest. Early in life, he began writing, and is thought to have composed more than 700 homilies. Jacob, "flute of the Holy Spirit and harp of the faithful church," has a great love of the Mother of God. In this volume, four homilies have been chosen from the Syriac texts.

The Quartodecimans were early Christians who maintained the tradition derived from Judaism, and observed Pascha at the same time that the Jews observed Passover.

The preaching of the truth, brother, and the confession of Orthodoxy is more needful for us than everything else, and we must make this confession before all mankind. For this is the foundation of all who believe. On account of this confession Peter was called blessed and was appointed to bear the keys of the kingdom of God. Paul, too, bore the hope of receiving the crown of life, since he kept and preached the faith. Indeed, the whole choir of the saints who did likewise and finished the race well has been glorified. We must also build up our neighbor, as much as we are able.

Romanos straddled the worlds of antiquity and Byzantium, and his hymns are a unique fusion of classical rhetoric, Syriac poetry, and the theology of the Cappadocian Fathers. Scripture comes to life in his hymns, inviting the faithful to encounter biblical events in their own liturgical experience, where the human-divine encounter was enriched with sacred music and holy ritual, amplifying moments of desire, sadness, and joy.

It is often said that the Orthodox Church is a hospital and that our understanding of salvation is therapeutic. Here Met. Kallistos explores what this means in many different ways, and helps us to understand more deeply our relationship with Christ the physician of souls and bodies, who came to save and to heal both us and the world.

Most books aimed at introducing Orthodoxy to the non-Orthodox begin by explaining basic points of doctrine and practice that differ from what the average reader may be familiar with. But for the average American, this approach doesn't go deep enough. In order to be able to fully understand Orthodox doctrine and practice, we have to unlearn an entire secular worldview and become participants in a sacramental worldview instead of a worldview that embraces reality as it truly is.

Considered by many to be the final and crowning work of the patristic age, St John of Damascus’ On the Orthodox Faith addresses all the major areas of Christian belief: Trinitarian theology, Christology, soteriology, the sacraments, the veneration of icons, saints, relics, and much more.

The resurrection from death is a strong component of the Christian faith, which the Nicene Creed, affirms stating: "We look for the resurrection of the dead, and the life of the world to come." The early Christian writers Irenaeus and Justin Martyr, in the second century, wrote against the widespread idea of their time that only the soul survived. In like manner, we have this later writing of St. Gregory of Nyssa (335-395 AD) which clearly articulates the position that a person is both soul and body and that Christ has promised to raise them both.

Apostolic Tradition, as this text is best known, was identified in the early twentieth century as the work of Hippolytus, a Christian leader from third-century Rome. The text provides liturgical information of great antiquity, and as such has been massively influential on liturgical study and reform, especially in Western Churches. The second edition of this crucial liturgical document continues Fr Stewart's influential work of re-evaluating the evolution of church hierarchy in the early Church.

Saint Anthony of Egypt was a pioneer of the monastic tradition, who inspired the establishment of Christian monastic orders in Europe and beyond. An important event in St. Anthony's life was his encounter with demonic forces in the desert. This occurrence has been covered extensively in art and literature.

The last half of the 20th century saw the establishment of the reputation of St Maximus the Confessor as the greatest of all Byzantine theologians, with a wholeness of vision that speaks directly to many of our concerns today. Until very recently, however, little of his work has been available in English translation, save for some collections of brief reflections arranged in centuries and a few brief treatises, too easily classified as "spirituality."

The seven works in this volume (some translated for the first time) explore the great human mystery of death and the promise of eternal life. They present—along with On the Soul and the Resurrection (PPS 12)—a vision that is consistent, philosophically profound, and characteristic of Gregory’s wider theology.

Considered by many to be the final and crowning work of the patristic age, St John of Damascus’ On the Orthodox Faith addresses all the major areas of Christian belief: Trinitarian theology, Christology, soteriology, the sacraments, the veneration of icons, saints, relics, and much more.

By any standard, this is a classic of Christian theology. Composed by St. Athanasius in the fourth century, it expounds with simplicity the theological vision defended at the councils of Nicaea and Constantinople: that the Son of God himself became "fully human, so that we might become god."

Apostolic Tradition, as this text is best known, was identified in the early twentieth century as the work of Hippolytus, a Christian leader from third-century Rome. The text provides liturgical information of great antiquity, and as such has been massively influential on liturgical study and reform, especially in Western Churches. The second edition of this crucial liturgical document continues Fr Stewart's influential work of re-evaluating the evolution of church hierarchy in the early Church.

St Isaac of Nineveh (7th c.), or Isaac the Syrian, is renowned for his spiritual writings. After only five months as bishop of Nineveh, he returned to a life of solitary stillness in the desert of modern-day Iran. His Spiritual Homilies (homilies 1-6 in PPS 11) quickly became treasured throughout the Christian world, not only inspiring monastic and spiritual life through the ages, but influencing culture more broadly, as in the works of Dostoevsky.

Maximus' vision of the liturgy contemplates the interpenetrating relationships of all things with each other and with Christ, in whom all things cohere. The church building, the human being, and the cosmos are all mutually related and symbolically reflect each other. Further, in the liturgy, we enter into the mystery of Christ.

The preaching of the truth, brother, and the confession of Orthodoxy is more needful for us than everything else, and we must make this confession before all mankind. For this is the foundation of all who believe. On account of this confession Peter was called blessed and was appointed to bear the keys of the kingdom of God. Paul, too, bore the hope of receiving the crown of life, since he kept and preached the faith. Indeed, the whole choir of the saints who did likewise and finished the race well has been glorified. We must also build up our neighbor, as much as we are able.

Christian tradition often seems to give only grudging approval to married life, particularly its sexual aspect. In these sermons of St John Chrysostom, we find an important corrective to this view.

In this classic book, John of Damascus laboured to form one complete, clear, and brief theological work that would summarize all Christian doctrine that had been passed down and agreed upon. The following was said of the book: The result was an inexhaustible storehouse of tradition in which nothing is to be found that has not been either approved by the ecumenical synods or by the established leaders of the Church.

The Quartodecimans were early Christians who maintained the tradition derived from Judaism, and observed Pascha at the same time that the Jews observed Passover.

St Sarapion, a friend of St Anthony the Great and St Athanasius, first lived as a monk and abbot in the Egyptian desert before becoming bishop of Thmuis. This is a translation of the Euchologion (or prayer book) of St Sarapion, which contains thirty prayers for Baptism, the Liturgy, and several other needs and situations.

It is often said that the Orthodox Church is a hospital and that our understanding of salvation is therapeutic. Here Met. Kallistos explores what this means in many different ways, and helps us to understand more deeply our relationship with Christ the physician of souls and bodies, who came to save and to heal both us and the world.

These are the words or sayings (Apophthegmata), of various monks (the abbas, i.e. fathers) who lived in the deserts of Egypt between 250 A.D. and 400 A.D. They cover topics such as love, poverty, fasting, humility, and prayer, and there is usually a short story that gives the context of the sayings. These sayings are one of the few surviving records of the first monks such as St. Anthony the Great and St. Pachomius, who followed a strict way of life. Their sole aim was to draw closer to God through their labours.

Origen (c. 185-c. 253) was the most influential Christian theologian before Augustine, the founder of Biblical study as a serious discipline in the Christian tradition, and a figure with immense influence on the development of Christian spirituality. This volume presents a comprehensive and accessible insight into Origen's life and writings, written and compiled by Joseph W. Trigg, a leading Origen authority. An introduction analyzes the principal influences that formed him as a Christian and as a thinker.