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Augustine of Hippo · 399–419 · Book
Augustine's monumental theological treatise emerged from the doctrinal controversies that wracked the early church in the decades following the Council of Nicaea. Writing over twenty years beginning around 399, the Bishop of…
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Novatian · 250–257 · Treatise
Novatian's treatise on the Trinity stands as one of the earliest systematic treatments of trinitarian doctrine in Latin Christianity, composed during the middle of the third century when the Church faced mounting…
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Hilary of Poitiers · 356–359 · Treatise
Hilary of Poitiers composed this monumental treatise on the Trinity during his exile in Phrygia between 356 and 359, imposed by the Arian emperor Constantius II for his defense of Nicene orthodoxy.…
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Peter Leithart · 2015 · Book
Peter Leithart's "Traces of the Trinity" emerges from his conviction that trinitarian theology should reshape how Christians understand every aspect of reality. Writing as a Reformed theologian concerned that the Trinity remains…
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Philoxenus of Mabbug · 485–523 · Treatise
This theological treatise emerges from the heated christological controversies of the late fifth and early sixth centuries, when the churches of the East were fracturing over questions of Christ's nature. Philoxenus of…
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Two Sisters in the Spirit Two Sisters in the Spirit: Thérèse of Lisieux and Elizabeth of the Trinity
Hans Urs von Balthasar · 1970 · Book
Hans Urs von Balthasar's theological meditation examines two French Carmelites who died within a decade of each other at the turn of the twentieth century. Both Thérèse of Lisieux and Elizabeth of…
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Didymus the Blind · 380–398 · Treatise
Didymus the Blind's treatise on the Trinity emerged from the theological turbulence of the late fourth century, when the church was still working out the implications of Nicaea's affirmation that Christ is…
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Gregory of Nyssa · 380–381 · Letter
For readers who want the Cappadocian doctrine of the Trinity in a few pages addressed to a layman; printed among Basil's letters for centuries, and a good first taste of Gregory's dogmatic writing.
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Cyril of Alexandria · 420–425 · Treatise
The Thesaurus on the Holy and Consubstantial Trinity stands as Cyril of Alexandria's systematic defense of Nicene orthodoxy against the resurgent Arianism of his era. Written in the early fifth century as…
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Alcuin of York · 802 · Treatise
Written around 802 during the height of Charlemagne's educational reforms, Alcuin of York's treatise on the Trinity emerged from the Carolingian court's commitment to theological precision and doctrinal clarity. As master of…
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Athanasius of Alexandria · 356–361 · Treatise
For students of the Trinity and of Nicaea who want the full case against Arius from Scripture; long and demanding, not a first book.
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Dorothy L. Sayers · 1941 · Book
Dorothy L. Sayers wrote this theological meditation during the early years of World War II, seeking to illuminate the nature of creativity and its relationship to divine creation. A detective novelist and…
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Vladimir Lossky · 1955 · Essay
This theological essay emerges from Vladimir Lossky's sustained effort to articulate Eastern Orthodox trinitarian theology for Western audiences in the mid-twentieth century. Writing within the context of renewed patristic scholarship and ecumenical…
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Gregory of Nyssa · 381 · Treatise
For readers who want the classic Cappadocian answer to 'if Father, Son and Spirit are each God, why not three gods?'; short and dense, for those already at home with Trinitarian terms.
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John of the Cross · 1578–1579 · Poem
For readers who want the Trinity, creation and the Incarnation told as a simple ballad sequence.
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Athanasius of Alexandria · 370–372 · Letter
For readers of Christology between Nicaea and Chalcedon: the short letter in which he insists that Christ's body was a real human body, read aloud at Chalcedon as a touchstone of orthodoxy.
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Ambrose of Milan · 375–381 · Treatise
Ambrose of Milan's treatise on the Holy Spirit emerged from the doctrinal controversies of the late fourth century, when Arian theology continued to challenge orthodox Trinitarian faith even after the Council of…
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Gregory of Nazianzus · 381 · Sermon
For readers following the story of his resignation from Constantinople in 381; a defence of his two years there and a farewell, personal and bitter by turns.
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Girolamo Zanchi · 1572 · Treatise
Girolamo Zanchi's treatise on the Trinity emerged from the doctrinal controversies that continued to roil Protestant territories in the mid-sixteenth century. Writing as professor of theology at Strasbourg, Zanchi confronted both anti-Trinitarian…
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John Owen · 1657 · Book
John Owen's treatise on communion with God emerged from his pastoral concern that English Christians, despite their theological orthodoxy, remained strangers to the experiential reality of fellowship with the Trinity. Writing during…
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Athanasius of Alexandria · 1892 · Book
For readers who want nearly all of Athanasius in English in one volume, with Robertson's long introduction; the individual works are catalogued separately.
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Christian Doctrine of God The Christian Doctrine of God: One Being Three Persons
Thomas Torrance · 1996 · Book
Thomas Torrance's systematic exploration of trinitarian doctrine emerged from his lifelong engagement with patristic theology and his concern that Western Christianity had drifted from the insights of the early church fathers. Writing…
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Didymus the Blind · 360–380 · Treatise
Didymus the Blind's treatise on the Holy Spirit emerged during the intense theological debates of the fourth century, when the church was still working out the full implications of Nicene orthodoxy. Writing…
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Ambrose of Milan · 378–380 · Treatise
Ambrose of Milan's De Fide emerged from a direct imperial command. In 378, the newly crowned Emperor Gratian, facing the ongoing Arian crisis that had fractured the church for decades, requested that…
