Christology & the Trinity
Who Christ is, and how Father, Son and Spirit are one God: the Arian controversy and its answers.
Key terms: ὁμοούσιος (homoousios), τριάς (trias), φύσις (physis), persona, substantia — the Day 14 terms index will link each term to its occurrences across the corpus.
- Exposition of the Christian Faith
- Letters
- Memorial (Relatio III, the Altar of Victory debate)
- On the Duties of the Clergy (De Officiis)
- On the Holy Spirit
- On the Mysteries
- Demonstrations (NPNF selection: I, V, VI, VIII, X, XVII, XXI, XXII)
- Against the Gentiles (Contra Gentes)
- Four Discourses Against the Arians
- Life of St. Anthony
- On the Incarnation of the Word
- City of God
- Confessions
- Enchiridion
- On Christian Doctrine
- On the Holy Trinity
- Address to Young Men on the Right Use of Greek Literature
- Hexaemeron
- On the Holy Spirit (De Spiritu Sancto)
- Sermon 13: On Holy Baptism
- Session III (1546): Decree Touching the Symbol of Faith
- Session XXIII (1563): The True and Catholic Doctrine, Touching the Sacrament of Order, Decreed and Published...
- Against Julian (survives in part)
- Commentary on the Gospel of John
- Commentary on the Gospel of Luke
- Five Tomes Against Nestorius
- That Christ is One
- Homilies: On Our Lord; On Admonition and Repentance; On the Sinful Woman
- Hymns for the Feast of the Epiphany
- Hymns on the Faith ("The Pearl")
- Hymns on the Nativity of Christ in the Flesh
- Nisibene Hymns
- First Vatican Council (1869–1870): Dei Filius — Dogmatic Constitution on the Catholic Faith
- First Vatican Council (1869–1870): Pastor Aeternus — First Dogmatic Constitution on the Church of Christ
- Letters
- Select Orations
- Two Invectives Against Julian (Orations 4–5)
- Against Eunomius
- Funeral Oration on Meletius
- Letters
- Life of St. Macrina
- On Virginity
- On the Baptism of Christ
- On the Faith
- On the Making of Man
- The Great Catechism
- Ad Nationes
- Adversus Marcionem
- De Praescriptione Haereticorum
- The Apology
- Chalcedon (451): The Definition, Tome of Leo, and Canons
- Constantinople I (381): Creed, Canons, and Letters
- Constantinople II (553): Capitula and Anathemas
- Constantinople III (680-81): The Definition and Decrees
- Ephesus (431): Anathematisms, Canons, and Decrees
- Nicaea I (325): Canons, Decrees, and Definitions
- Nicaea II (787): The Decree and Canons
Ambrose of Milan
Aphrahat
Athanasius
Augustine of Hippo
Basil of Caesarea
Council of Trent
Cyril of Alexandria
Ephrem the Syrian
First Vatican Council
Gregory of Nazianzus
Gregory of Nyssa
Tertullian
The Ecumenical Councils