Neither confounding the Persons, nor dividing the Substance

The Text

Verse 3 stated the doctrine positively: one God in Trinity, and Trinity in Unity. Verse 4 fences it negatively, and the negative fence is the creed’s actual method. The catholic faith is here defined not by a picture of the Trinity — the creed never offers one — but by two refusals. You may not confound the persons, and you may not divide the substance. Everything between verses 5 and 27 is the patient application of these two prohibitions to one attribute after another.

This is orthodoxy by apophasis — definition by what is excluded. The doctrine of the Trinity, on the Athanasian Creed’s own showing, is not a model you can draw. It is a road with a ditch on either side, and the creed’s whole genius is to keep naming the two ditches so precisely that the road becomes visible by their edges. The ditch on the left is Sabellius: the persons merge until “Father, Son, and Spirit” are only three masks of one solitary God. The ditch on the right is Arius: the substance splits until the Son and the Spirit are something less than the one God, or until there are three gods. The verse forbids both in a single breath, and in doing so tells you that anything you can comfortably picture is almost certainly in one of the ditches.

Translation Notes

Neque … neque — “neither … nor.” The doubled negative is the formal signature of the whole creed. Orthodoxy is stated as a balance held against two opposite falls, never as a positive description that could be grasped and therefore mishandled. The rhythm itself teaches: every true thing about the Trinity is said by refusing two false things.

confundentes personas — “confounding the persons.” Confundere is literally to pour together — to blend until distinction is lost. The error is modalism: the Father, the Son, and the Spirit are not really distinct but are one divine subject presenting himself in three successive roles or modes. Its ancient names are Sabellianism (after Sabellius), modalistic monarchianism, and — in its sharpest form — Patripassianism, the claim that the Father himself suffered on the cross, since there is no really distinct Son to suffer.

substantiam separantes — “dividing the substance.” Separare is to sever. The error is the opposite: the one divine substantia (the divine being, Greek ousia — what God is) is partitioned. Severed cleanly, it yields tritheism, three gods. Severed by rank, it yields Arianism and subordinationism: the Son and the Spirit are lesser, derived, ultimately creaturely, and only the Father is God without qualification.

personae — the word that has to be watched. Persona is Tertullian’s coinage, paired with substantia (Adversus Praxean, c. 213). In the creed it does not mean what modern English “person” means — an individual psychological self, a separate center of consciousness and will. A persona (Greek hypostasis) is a subsistent mode of being of the one undivided God, distinguished from the others solely by relation of origin (the Father unbegotten, the Son begotten, the Spirit proceeding). To hear “three persons” as “three personalities” is not a small slip; it is to fall, by way of the translation, into the very substantiam separantes the same verse prohibits. This single word is why the modern Trinitarian conversation (Barth, Rahner, and the social trinitarians) keeps returning to verse 4.

Historical Context

The two ditches were not hypothetical when this creed was written; they were the marked graves of two long wars.

The left ditch: monarchian modalism (3rd century). In Rome around 200–260, a series of teachers — Noetus, Praxeas, Sabellius — pressed monotheism so hard that the distinctions vanished. Praxeas (whom Tertullian skewered) taught a God who is Father and Son indifferently; the logical end was that the Father was crucified. Sabellius gave the position its lasting name: one God (huiopatōr, “Son-Father”) manifest in three successive modes. The church’s rejection of Sabellius is the origin of the creed’s first prohibition.

The right ditch: Arian subordination (4th century). Arius of Alexandria taught that the Son was the highest creature — “there was when he was not” — and the long Nicene war (325–381) was fought to deny exactly that division of the divine substance into God and a god-like creature. Cruder still, and always lurking, was outright tritheism. The creed’s second prohibition is the Nicene settlement compressed into three words.

The method becomes the doctrine. Both the Cappadocians in the East and Augustine in the West had defined Trinitarian orthodoxy precisely as the narrow path between Sabellius and Arius. The Athanasian Creed, c. 500 in southern Gaul, does not add to that settlement; it codifies its method — orthodoxy as the simultaneous refusal of confounding and dividing — and hands it to the church in a form short enough to be sung at Prime.

The afterlife of persona. Boethius (early 6th century) gave the West its classic, and troublesome, definition: persona is naturae rationabilis individua substantia — “an individual substance of a rational nature.” Read flatly, that definition tilts toward the right ditch (three individual rational substances sound like three gods), and the whole medieval and modern tradition has had to qualify it. That qualifying labor — from Richard of St Victor to Aquinas to Barth and Rahner — is the continuing history of this one verse.

Lines of Interpretation

Every tradition affirms the double prohibition. The live, disputed question is whether the word persona — “person” — can still be said in modern languages without forcing the speaker into one ditch or the other.

Patristic

Tradition: Tertullian, Adversus Praxean; Hippolytus, Contra Noetum; Athanasius; the Cappadocians; Augustine, On the Trinity VII

The Fathers established the via media itself: against Sabellius, the persons are really and eternally distinct; against Arius, the substance is one and undivided. The Cappadocian instrument is one ousia, three hypostases; the Augustinian instrument is one essence, three subsistent relations. Distinction is secured by relation of origin alone, not by any division of being.

Strengths

• Defines orthodoxy with surgical exactness — the method that actually defeated both heresies, not a compromise between them
• Locates the persons’ distinction in relation, the one ground that distinguishes without dividing

Weaknesses

• The whole settlement rests on a technical sense of persona/hypostasis that the wider church never fully internalized, leaving the formula perpetually exposed to popular misreading
• Stated apophatically, it tells you where the ditches are but hands the worshipper no positive image — which is faithful, but pastorally hard

Scholastic

Tradition: Boethius, Contra Eutychen (the definition of persona); Richard of St Victor, De Trinitate; Thomas Aquinas, Summa Theologiae I q. 29

The Schoolmen inherited Boethius’s risky definition and spent centuries repairing it. Richard of St Victor reframed persona relationally as incommunicabilis existentia — an incommunicable existence — pulling it away from “individual substance” toward relation and communion. Aquinas defined the divine person as a subsistent relation: the relation itself, subsisting, is the person, so that distinction and unity are secured by the same move.

Strengths

• Aquinas’s “subsistent relation” is arguably the most precise repair ever made to the word — it distinguishes the persons without severing the substance
• Richard’s relational-communional reading anticipates the best of later personalist theology

Weaknesses

• Boethius’s “individual substance of a rational nature,” taken without the scholastic qualifications, reads as straightforward tritheism — the right ditch entered through a definition
• The repair is so technical that it rescues the word for theologians while leaving it dangerous in ordinary speech

Reformed

Tradition: Calvin, Institutes I.13; the autotheos controversy

Calvin affirms the via media and defends the word person while conceding it is a human term for a scriptural reality. His distinctive move bears directly on substantiam separantes: the Son is autotheos, God of himself with respect to his essence (the divine essence is not “derived” or “communicated” as if it could be parceled), even while, as Son, he is eternally of the Father by relation. Calvin presses this precisely to forbid any severing of the one essence into a fount and its dependents.

Strengths

• The autotheos emphasis is a powerful guard on the second prohibition: the one essence is wholly and underivably each person’s, not divided or graded
• Holds the technical vocabulary while keeping it tethered to Scripture and to worship

Weaknesses

• Critics (then and since) charged that autotheos, pressed too far, risks loosening the relations of origin and thus the very distinctions the first prohibition protects
• Later Reformed scholasticism sometimes multiplied distinctions until the apophatic restraint of the verse was lost

Eastern Orthodox

Tradition: the Cappadocians and John of Damascus as foundational; modern Orthodox personalism (Lossky, Zizioulas)

The East holds hypostasis with great confidence and reads the two prohibitions through the Father’s monarchia: the Father is the personal source from whom the Son is begotten and the Spirit proceeds, which secures the distinctions (against the left ditch), while the one ousia fully possessed by each secures the unity (against the right). Zizioulas develops hypostasis as relational being-in-communion — personhood as the very mode in which the one God exists.

Strengths

• Keeps the persons concrete and irreducible, the strongest available bulwark against modalism
• The communion-ontology recovers persona as a rich positive category rather than a damage-controlled term

Weaknesses

• The monarchy of the Father, pressed hard, courts a soft separare — a subordination the creed’s later verses (none is afore or after; none is greater or less) explicitly forbid
• The modern personalist reading, powerful as theology, sometimes runs ahead of what the patristic sources will actually bear

Modern / Ecumenical

Tradition: Karl Barth, Church Dogmatics I/1 §9; Karl Rahner, The Trinity; the social trinitarians (Moltmann, Gunton, Zizioulas)

This verse is the precise fulcrum of the modern debate. Barth, judging that “person” now unavoidably means “individual personality” and so forces the right ditch, proposed Seinsweise — “mode” or “way of being.” Rahner, for the same reason, proposed “distinct manner of subsisting.” The social trinitarians refused the surrender, arguing that recovering a relational, communional sense of person is exactly what the modern world needs and that Barth and Rahner, by reducing the Three to “modes,” lean toward the left ditch.

Strengths

• Takes with full seriousness that words drift, and that fidelity to the verse’s intent may require re-glossing or replacing the word person
• The exchange has produced the richest Trinitarian theology since the Cappadocians, with the verse’s two prohibitions functioning exactly as intended — as the shared criterion

Weaknesses

• Barth’s and Rahner’s “modes” can list toward the modalism the first prohibition forbids — one subject in three ways
• Social trinitarianism can list toward the tritheism the second prohibition forbids — three centers of consciousness in loving society; the verse judges both over-corrections, which is its enduring usefulness

Wesleyan Voice

The single most Wesleyan sentence about the Trinity sits exactly on this verse’s nerve. In Sermon 55, On the Trinity (1775), Wesley writes: “I dare not insist upon anyone’s using the word Trinity or Person.” That is not doctrinal looseness; read against verse 4 it is doctrinal precision applied at the level of pastoral language. Wesley had seen what the unguarded word Person does in ordinary mouths — it slides, almost inevitably, into three gods (the right ditch) or, in the recoil, into three masks (the left). His remedy was not to revise the doctrine but to refuse to make the technical term the test, while insisting without compromise on the fact the term protects: the Father is God, the Son is God, the Spirit is God, and God is one.

That is the via media of verse 4, transposed from metaphysics into preaching. Wesley keeps both prohibitions. Against confounding the persons, he insists the Son is genuinely and eternally distinct — his Christology and his doctrine of the Spirit’s personal work in the ordo salutis would collapse otherwise. Against dividing the substance, he insists with equal force that there is one God, not a high God and two lesser ones; his soteriology requires that the Son who justifies and the Spirit who sanctifies be, without remainder, the one God who saves. The Methodist Articles of Religion, Article I — “three persons, of one substance, power, and eternity” — keeps the verse’s exact balance. Wesley deleted the creed; he did not delete its method.

Charles Wesley guarded the same road in song, and characteristically guarded it by adjective. His Trinity hymns rarely argue; they qualify — co-equal, co-eternal, undivided, distinct yet one. Each adjective is one of verse 4’s two prohibitions turned into praise: undivided refuses the right ditch, distinct refuses the left, and the hymn walks the road between them without ever stopping to draw a map.

Hymnody

There is no hymn on “neither confounding nor dividing” — you cannot sing a pair of prohibitions any more than you can sing a warning. What the hymnody carries is the verse’s content, smuggled in as the qualifying adjectives of the great Trinity hymns, and once you know to listen for them they are everywhere.

“Holy, Holy, Holy! Lord God Almighty!” ends each verse on “God in three Persons, blessèd Trinity” — and it does use the dangerous word Persons, held safe by the surrounding confession of the one “Lord God Almighty”: the hymn keeps both prohibitions in a single line.

Charles Wesley’s Trinity hymns are a sustained exercise in the via media by adjective. “Hail, holy, holy, holy Lord” praises the “supreme, essential One, adored / in co-eternal Three” — essential One forbids dividing the substance, co-eternal Three forbids confounding the persons. The 1767 Hymns on the Trinity repeat the move in a hundred variations: the doctrine is never explained, only guarded, and guarded by the careful piling of undivided, co-equal, distinct.

The plainest hymnic form of the verse is the oldest: the Gloria Patri itself — as it was in the beginning, is now, and ever shall be — confesses three named persons in one unchanging glory, the whole creed’s method in a single sung sentence. The honest summary is that this verse has no anthem of its own and needs none; it lives, dispersed, in the adjectives the church has always sung to keep herself out of the two ditches.

Pastoral and Liturgical Use

This is the most immediately useful verse in the entire creed, because it is the church’s built-in diagnostic for every well-meant lay explanation of the Trinity — and almost every well-meant lay explanation is, when measured against it, a small heresy with good manners.

Run the analogies past the two prohibitions and watch them fail. Water–ice–steam: the same substance in three states — that is confounding the persons, the left ditch, Sabellius with a kettle. The shamrock, the three-leaf clover, the egg (shell, white, yolk), three men who share humanity, the man who is father, son, and employee: every one of these divides the substance or splits it into three instances — the right ditch. The single most clarifying twenty minutes a pastor can spend on the Trinity in an adult class is not constructing a better analogy. It is taking the congregation’s own favorite analogies, one by one, and asking of each: which ditch? The verse turns the doctrine’s hardest teaching moment into its clearest, because it does not ask the class to picture the Trinity; it teaches them to recognize the two specific ways every picture goes wrong.

Name the comfortable idol. The analogy that finally “makes the Trinity make sense” feels like a relief, and the relief is the tell. A picture that resolves the mystery has not understood it; it has joined one of the heresies the church spent three centuries naming. The pastoral good news here is strangely freeing: you were never asked to visualize God. You were asked not to falsify him in two precise ways — not to merge the Three into a solitary self, not to break the One into a committee — and then to do what verse 3 actually commanded, which was not to explain but to worship. The verse does not leave the congregation with a diagram. It leaves them with a guarded silence and a doxology, which is the right place to be left.

Let the liturgy keep the balance the words can’t. The congregation already walks this road every week: baptized into one Name that is three, blessed by a benediction that is three-in-one, ending every psalm with a Gloria that confesses distinct persons in undivided glory. The pastor’s task is not to add an explanation but to point at what the church is already doing and say: that — that careful way we name God, three and one, without ever collapsing or splitting him — that is the catholic faith. We have been keeping verse 4 all along.

Further Reading

• Tertullian, Adversus Praxean — the coining of persona and substantia, against modalism
• Hippolytus, Contra Noetum — against monarchian modalism (the left ditch)
• Athanasius, Discourses Against the Arians — against the division of the substance (the right ditch)
• Gregory of Nazianzus, Theological Orations 27–31; Basil, On the Holy Spirit
• Augustine, On the Trinity, esp. Books V–VII
• Boethius, Contra Eutychen et Nestorium — the classic (and problematic) definition of persona
• Richard of St Victor, De Trinitate — the relational reframing of person
• Thomas Aquinas, Summa Theologiae I q. 29 — the divine person as subsistent relation
• John Calvin, Institutes I.13 (including the autotheos discussion)
• The Book of Concord (1580), the Three Ecumenical Creeds; The Articles of Religion (1784), Article I
• John Wesley, Standard Sermons, Sermon 55, “On the Trinity” (1775)
• Charles Wesley, Hymns on the Trinity (1767)
• Karl Barth, Church Dogmatics I/1, §9 (the Seinsweise proposal)
• Karl Rahner, The Trinity (Herder & Herder, 1967)
• Jürgen Moltmann, The Trinity and the Kingdom (SCM, 1981)
• Colin Gunton, The Promise of Trinitarian Theology (T&T Clark, 1991)
• John Zizioulas, Being as Communion (St Vladimir’s, 1985)
• Lewis Ayres, Nicaea and Its Legacy (Oxford, 2004)