Theopedia

Hilary of Poitiers

Hilary of Poitiers (d. 368) was a bishop of Poitiers, in the Latin West, whose De Trinitate carried Nicene trinitarian theology from the Greek East into the West.1 He wrote against Arianism by defending the Son’s consubstantiality with the Father, while also giving sustained attention to the divinity of the Holy Spirit.2

Theological Contribution

Pro-Nicene Trinitarian theology and the Holy Spirit

Hilary’s main work, De Trinitate, marks his “development in Latin pro-Nicene theology” as he drew on “contemporary eastern concerns while still turning constantly to his… Latin traditions.”2 He combated Arianism chiefly by pressing the Son’s consubstantiality with the Father, opening books 2 and 3 of De Trinitate with the unity of the divine persons: “The Father is the one from whom all things come, and is treated as the source of the Son and the Spirit.”2 Because the doctrine of the Holy Spirit was “still underdeveloped” among his contemporaries, the patristic scholar H. B. Swete found it “a surprise to find that the earlier part of his work contains so much upon it.”2 Hilary affirmed the Spirit’s eternal existence with the Father, describing the Spirit as “part of the perfect ‘whole’ that is the Godhead” rather than something generated or created.2 On the precise relationship between the Spirit, the Son, and the Father, though, the patristic scholar Lewis Ayres judges that Hilary says “virtually… nothing,” beyond stating that the Spirit comes “from the Father and through the Son.”2

Charles Hodge’s Systematic Theology quotes Hilary appealing to Christ’s own words, “Pater major me est” (“the Father is greater than I,” John 14:28), to describe an order among the divine persons: the unbegotten before the begotten, the one who sends before the one sent.3 Hodge reads this as “the general idea of the Nicene fathers” on the point, an order among equally divine persons rather than a difference of essence.3

An early witness to justification by faith

Brian John Arnold’s dissertation on justification in the century after Paul cites Hilary, alongside Origen, against the claim that Pauline justification by faith lay dormant between the apostles and its Reformation “rediscovery.”4 Arnold draws on D. H. Williams’s study of Hilary’s Matthew commentary, in which Williams calls Hilary “the first Christian theologian explicitly to have formulated what Paul left implicit by referring to God’s work of grace in the phrase, ‘fides sola iustificat’” (“faith alone justifies”).4 Arnold notes that Williams’s further claim, that justifying faith appears in Latin theology and not in the Greek fathers, is disputed, but treats the finding about Hilary’s own text as sound.4

Historical Significance

A. A. Hodge’s Outlines of Theology groups Hilary with Tertullian and Ambrose among the Latin fathers whose writings show “a marked tendency… to those more correct views afterwards triumphantly vindicated by the great Augustine.”5 Bavinck likewise places Hilary, alongside Ambrose, Jerome, Rufinus of Aquileia, and John Cassian, among the writers through whom Eastern trinitarian and christological thought moved into the Western church and became part of Augustine’s own theological inheritance.1 Matthew Barrett’s 2019 book on the divine attributes still quotes On the Trinity directly, opening its chapter on divine omnipotence with Hilary’s line, “God, being power, is not made up of things that are weak,” alongside Isaiah, Jeremiah, and Martin Luther.6

Related Doctrines

References

  1. Herman Bavinck, Reformed Dogmatics: Abridged in One Volume, ed. John Bolt (Grand Rapids: Baker Academic, 2011), chap. 2, “The History and Literature of Dogmatic Theology”: “Eastern thought also moved westward through the efforts of Hilary of Poitiers (d. 368), Ambrose (d. 397), Jerome (d. 420), Rufinus of Aquileia (d. 410), and John Cassian (360-430).” ↩ ↩2

  2. Samantha Ming Sum Cheng, “The Doctrine of the Holy Spirit’s Eternal Procession in Church History,” in “Retrieving Eternal Procession: A Dogmatic Western Account of the Holy Spirit’s Relation to the Father and the Son in the Triune God’s Divine Life” (PhD diss., The Southern Baptist Theological Seminary, 2025), 48-49. ↩ ↩2 ↩3 ↩4 ↩5 ↩6

  3. Charles Hodge, “Chapter VI. The Trinity,” in Systematic Theology, vol. 1 (New York: Charles Scribner and Company, 1871), 465-66. ↩ ↩2

  4. Brian John Arnold, Justification One Hundred Years After Paul (PhD diss., The Southern Baptist Theological Seminary, 2013), 28-29, citing D. H. Williams. ↩ ↩2 ↩3

  5. Archibald Alexander Hodge, Outlines of Theology (New York: Robert Carter and Brothers, 1879), 94-95. ↩

  6. Matthew Barrett, None Greater: The Undomesticated Attributes of God (Grand Rapids: Baker Books, 2019), chap. 10, “Is God All-Powerful, All-Knowing, and All-Wise? Omnipotence, Omniscience, and Omnisapience.” ↩