Extra calvinisticum

“He is before all things, and in him all things hold together.”

— Colossians 1:17

The extra calvinisticum is the teaching that the person of the Son is not contained or circumscribed by the human nature he assumed at the incarnation: because he remains fully God, he continues to exist and act beyond his flesh as well as in it, even while incarnate.¹ John Calvin put the point this way:

“The Son of God descended from heaven in such a way that, without leaving heaven, he willed to be borne in the virgin’s womb, to go about the earth, and to hang upon the cross; yet he continuously filled the world even as he had done from the beginning.”²

The name is a historical misnomer: Lutheran theologians coined it in controversy with the Reformed, but the underlying view is not a Calvin original. It appears earlier in patristic and medieval writers.¹

Confessional Definition

The 1689 Second London Baptist Confession does not use the term, but its Christology requires the same distinction. It states that the Son took on a human nature “so that two whole, perfect, and distinct natures were inseparably joined together in one person, without conversion, composition, or confusion; which person is very God and very man.”³ If the two natures remain “distinct” rather than merging into a third kind of thing, Christ’s divine nature is not reduced to, or exhaustively contained by, the human nature it assumed: the confession’s insistence on unconfused natures is the same claim the extra Calvinisticum makes explicit.

Biblical Basis

Paul writes that in Christ “all things hold together” (Col. 1:17), and that Christ, “upholding the universe by the word of his power” (Heb. 1:3), sustains creation continuously. If this sustaining work is true of the Son at any point, it is true at every point, including the years of his earthly life: either the Son’s upholding of the universe continued uninterrupted through the incarnation, or creation itself went briefly unsustained while he was on earth. The first is the far smaller claim.⁴

Historical Development

The distinction the extra Calvinisticum names goes back to the patristic and medieval period; the Reformation controversy that gave it a name began when Lutheran theologians opposed it.¹ At the Reformation, the Reformed churches saw themselves as continuing this inherited Christology rather than innovating. Charles Hodge quotes the Second Helvetic Confession’s own statement that Christ’s two natures are “conjoined and united” in one person “so that they are not absorbed, or confounded, or intermixed,” with “the properties of the natures being preserved and continuing.”⁵

Lutheran theologians, following Martin Chemnitz’s De Duabus Naturis in Christo, held instead that the personal union communicates the divine essence, or the divine attributes, to Christ’s human nature itself, so that his humanity becomes, in some sense, omnipresent.⁶ The most disputed application of this was the “ubiquity” of Christ’s body, bound up with the Lutheran doctrine of the Lord’s Supper.⁶

In the twentieth century, Karl Barth raised a different kind of objection. Barth was “wary of affirming the so-called extra Calvinisticum… in an unqualified manner,”⁷ worried that affirming a Son who subsists and is knowable apart from his decision to become incarnate implies two distinct “Logos” figures rather than one.⁸

Opposing Views

Lutheran. The personal union of Christ’s two natures communicates either the divine essence or the divine attributes to his human nature, so that Christ’s humanity itself shares, in some sense, in omnipresence, omniscience, and omnipotence. On this view there is no sense in which the Son exists “beyond the flesh” once incarnate, since the flesh itself now shares the properties that would otherwise require such an “extra.”⁶

Barth’s Christocentric objection. Because God is knowable only in his revelation in Christ, Barth resisted speaking of the Son’s identity or deity apart from reference to the incarnation. An extra Calvinisticum affirmed “in an unqualified manner” risks, on his reading, a Logos “constituted without reference to the incarnation” that would carry “a secondary version of deity lacking salvific efficacy,” and so an implicitly Nestorian split between the eternal Son and Jesus Christ.⁹

Objections and Responses

If Christ’s human nature isn’t itself omnipresent, he can’t be truly present everywhere in the Lord’s Supper. Hodge answers on several fronts. Scripture ascribing divine acts to Christ as a single subject doesn’t imply his human nature itself carries divine attributes, any more than “Jesus Christ is God” implies his human nature is divine.¹⁰ The Lutheran view also destroys the integrity of that human nature: “A body which fills immensity is not a human body. A soul which is omniscient, omnipresent, and almighty, is not a human soul.”¹¹ And it runs against Scripture’s insistence on a genuinely human Christ, “one who can be touched with a sense of our infirmities” (cf. Heb. 4:15), which an omnipresent, omniscient humanity could not be.¹¹

Affirming a Son who exists apart from the incarnation splits Christ into two. Duby answers that Barth conflates the union of essences with the union of the person. The extra Calvinisticum is a claim about how the divine nature exists, not about there being a second person alongside the man Jesus: the Son remains one person acting through both natures, whether or not his divine nature is exhaustively contained by the human nature he assumed.¹²

Related Doctrines

References

Matthew Barrett, None Greater: The Undomesticated Attributes of God (Grand Rapids: Baker Books, 2019), s.v. “extra Calvinisticum.” ↩ ↩² ↩³
John Calvin, Institutes of the Christian Religion 2.13.4, quoted in Matthew Barrett, None Greater: The Undomesticated Attributes of God (Grand Rapids: Baker Books, 2019), chap. 7. ↩
The Second London Baptist Confession of Faith (1689), chap. 8, “Of Christ the Mediator,” para. 2. ↩
Samuel G. Parkison, “Irresistible Beauty: Beholding Triune Glory in the Face of Jesus Christ” (PhD diss., Midwestern Baptist Theological Seminary, 2021), chap. 3, “Mediated Beauty,” 151-153. ↩
Charles Hodge, “Chapter III. Person of Christ,” in Systematic Theology, Volume II (New York: Charles Scribner and Company, 1872), 403-405, quoting the Second Helvetic Confession. ↩
Hodge, 405-410. ↩ ↩² ↩³
Steven J. Duby, God in Himself: Scripture, Metaphysics, and the Task of Christian Theology, Studies in Christian Doctrine and Scripture (Downers Grove, IL: IVP Academic, 2019), “Introduction,” 4. ↩
Duby, chap. 3, “Incarnation in Context,” 177-178. ↩
Duby, 180. ↩
Hodge, 412. ↩
Hodge, 414-415. ↩ ↩²
Duby, 181. ↩