Theopedia

Logos

“In the beginning was the Word, and the Word was with God, and the Word was God.”

— John 1:1 (ESV)

Definition

Logos (Greek for “word” or “reason”) is the title John’s Gospel gives to the eternal Son of God before naming him Jesus Christ: “the Word became flesh and dwelt among us” (John 1:14).1 Greek philosophers had already used the term for the rational principle ordering the universe, but John’s claim goes beyond that use: the Logos is a distinct person, “personally distinct from God while also truly being God himself,” through whom all things were made (John 1:1-3).23

Confessional Witness

The Reformed confessions do not use “Logos” as a technical term of their own; the word belongs to John’s own vocabulary, not the seventeenth century’s. What they confess is the doctrine John’s title expresses: that the Son is eternally God, of one substance with the Father. The 1689 Second London Baptist Confession states, in the same paragraph that confesses the Trinity, “the Son is eternally begotten of the Father,” sharing “the whole divine essence” the Father possesses.4 That is the same claim John’s prologue makes of the Logos, under a different name.

Biblical Basis

John’s opening words deliberately echo Genesis: where Moses begins “In the beginning, God,” John begins “In the beginning was the Word,” and what follows identifies the Word with the Creator himself rather than with anything he made.5 The Word was already active before creation, since “all things were made through him, and without him was not any thing made that was made” (John 1:3), which places the Word on the side of the Creator rather than the creature: everything that is not God came into being through him, so he cannot himself be numbered among the things that came into being.1 Unlike creation, which receives its life from God, “in him was life” (John 1:4); the Word does not derive life but gives it.1

This claim has deep roots in the Old Testament’s own language for God’s word and wisdom. The psalmist says that “by the word of the LORD the heavens were made” (Ps. 33:6), and Isaiah records God’s promise that his word “shall not return to me empty, but it shall accomplish that which I purpose” (Isa. 55:11), while Proverbs personifies Wisdom as active alongside God “when he marked out the foundations of the earth,” rejoicing before him (Prov. 8:22-31).6 John’s Gospel gathers up this language and applies it to a particular person: the Word “became flesh and dwelt among us, and we have seen his glory, glory as of the only Son from the Father, full of grace and truth” (John 1:14), and “no one has ever seen God; the only God, who is at the Father’s side, he has made him known” (John 1:18).7

Doctrinal Significance

The title also grounds Christ’s office as prophet. James Boyce reads the broadest sense of that office as belonging to “one who speaks for his God,” and finds the Logos title’s own fitness for that role stated in John’s own words: “it is in connection with this that the term Logos, or Word, applied to Christ in the 1st chapter of John is appropriate.”8 Because the Son is himself the Father’s own Word, the title grounds his fitness to speak for God as prophet in the fullest sense.8

Historical Development

Pre-Christian philosophical background

Long before John wrote, logos was already a significant term in Greek philosophy. Heraclitus, in the sixth century BC, used it for the rational principle that gives order to the universe, and the Stoics, beginning with Zeno around 300 BC, taught logos as the active, generative principle at work throughout the material world.2 Middle Platonist writers of the first and second centuries AD, most notably Numenius, spoke of a “first” and “second” God to explain how a wholly transcendent supreme principle could relate to the created world.9 Philo of Alexandria, a first-century Jewish philosopher, stood in this same tradition and used logos, rather than a second God, as the mediating principle between the transcendent God and his creation, comparing it to the blueprint an architect forms in his mind before building.10

Second-century apologists and their weaknesses

When Christian apologists of the second century, above all Justin Martyr, sought to explain Christ to an educated Greco-Roman audience, the logos concept already circulating in Greek philosophy gave them a ready vocabulary.11 Justin insisted plainly that Christians worshiped no second God, “for there is no other, but… this God in whom also you hope, the God of Abraham, Isaac, and Jacob,”12 yet his own formulations, calling the Son “the first power after the Father” and describing him as occupying “second place,” carried real traces of the surrounding philosophy’s subordinationist habits.13 Herman Bavinck judges that it would nonetheless be “a mistake to think of [Justin] as an Arian”: Justin understood the importance of Christ’s deity for salvation and worshiped Father, Son, and Spirit together.13

That subordinationist habit was not incidental to the apologists’ Logos theology but one of three diagnosed weaknesses. Ronald Heine identifies the first: “there seemed to be no way around the fact that this theology made it sound as though there is a first and a second God, in other words, two Gods.”14 The second was that “the Logos is not equal to God. He is subordinate to God the Father. Justin refers to him as ‘under’ the creator in the sense of a servant.”15 The third, Heine judges the most serious of the three: “the whole approach is based more on the philosophy of the Middle Platonists than on the Scriptures,” so that “if the Middle Platonist view of God is not correct, then the role of the Son as mediator, as the apologists conceived it, must also be modified.”15 Heine judges the resulting theology “was never considered heretical by the church at large, but it was considered inadequate for understanding the relationship between the Father and the Son,” and that “later Christian thinkers such as Origen modified it significantly.”15

Patristic correction and Nicaea

The generation after the apologists corrected the philosophy’s residue without abandoning the term. Irenaeus, opposing the Gnostic use of logos for an emanated cosmic principle, insisted the Logos “is not a creature but a hypostatic word,” true God, existing eternally with the Father rather than coming into being at any point.16 Tertullian supplied the vocabulary that later orthodoxy built on, describing Father, Son, and Spirit as three persons “of one substance, of one condition, and of one power,” together they “constitute one God.”17 The subordinationist strand the apologists left unresolved recurred in the fourth century’s Arian controversy, which the church answered at Nicaea.18

The mind-word tradition

A second, complementary use of the term outlasted the apologists’ own cosmological concerns. Patristic writers distinguished the Son as both the “inward word or thought” (logos endiathetos) and the “spoken word” (logos prophorikos): the first illustrating his eternal generation from the Father, the second his outward work in creation and salvation.19 Jonathan Swan traces this analogy from the Apostolic Fathers and apologists through Augustine and Aquinas into Reformed orthodoxy, where the Baptist theologian John Gill used it, together with the Son’s biblical titles as the Father’s image, brightness, and Wisdom, to defend eternal generation against both Socinianism’s denial of it and Sabellianism’s denial of any real personal distinction in God.19

Logos versus Theanthropos

The propriety of grounding Christ’s sonship in his identity as Logos specifically remained a live question even within later Reformed orthodoxy. A. A. Hodge records, and rejects, a view held by some who still called themselves Trinitarian: “they hold that the title ‘Son of God’ applies to Christ not as Logos, the eternal Second Person of the Trinity, but as Theanthropos [the God-man].”20 Hodge answers that this misreads the orthodox doctrine, which generates the Son’s person, not the divine essence itself, by “an eternal and necessary constitutional (not voluntary) act,” so that affirming the Son’s eternal sonship as Logos implies no inferiority to the Father.21

Modern usage

The term’s own trajectory, from a borrowed philosophical word to a subordinationist liability to a settled Nicene category, is why “Logos Christology” now names, in current usage, not a single idea but the whole classical position it grew into. Leopoldo A. Sánchez M. supplies a summary definition, quoted approvingly by Samantha Ming Sum Cheng: “Jesus is the God-man or the divine word made flesh. Against Arianism, it defends the unity of the Son and the Father, or the Son’s consubstantiality (homoousios) with the Father. Against Nestorianism, it defends the unity of the person of Christ in two natures.”22

Related Doctrines

References

  1. Parkison, The Fountain of Life, 41. ↩ ↩2 ↩3

  2. Ronald E. Heine, Classical Christian Doctrine: Introducing the Essentials of the Ancient Faith (Grand Rapids: Baker Academic, 2013), chap. 4, “‘And the Word Was God’: The Christian Faith and the Greek Philosophers,” 35. ↩ ↩2

  3. Parkison, The Fountain of Life, 40. ↩

  4. The Second London Baptist Confession of Faith (1689), chap. 2, “Of God and of the Holy Trinity,” para. 3. ↩

  5. Samuel G. Parkison, The Fountain of Life: Contemplating the Aseity of God, ed. Matthew Barrett, Contemplating God (Wheaton, IL: Crossway, 2026), chap. 4, “In the Beginning Was the Word,” 38. ↩

  6. Parkison, The Fountain of Life, 39. ↩

  7. Parkison, The Fountain of Life, 41-42. ↩

  8. James Petigru Boyce, “Chapter XXVII. The Offices of Christ,” in Abstract of Systematic Theology, 2nd printing (Baltimore: H. M. Wharton & Company, 1887), 291. ↩ ↩2

  9. Heine, Classical Christian Doctrine, 36-37. ↩

  10. Heine, Classical Christian Doctrine, 37-38. ↩

  11. Heine, Classical Christian Doctrine, 39. ↩

  12. Justin Martyr, Dialogue with Trypho the Jew 11.1, quoted in Heine, Classical Christian Doctrine, 38. ↩

  13. Herman Bavinck, Reformed Dogmatics: Abridged in One Volume, ed. John Bolt (Grand Rapids: Baker Academic, 2011), chap. 9, “The Triune God and His Counsel.” ↩ ↩2

  14. Heine, Classical Christian Doctrine, 43-44. ↩

  15. Heine, Classical Christian Doctrine, 44. ↩ ↩2 ↩3

  16. Bavinck, Reformed Dogmatics, chap. 9, “The Triune God and His Counsel.” ↩

  17. Bavinck, Reformed Dogmatics, chap. 9, “The Triune God and His Counsel.” ↩

  18. Bavinck, Reformed Dogmatics, chap. 9, “The Triune God and His Counsel”: “At Nicaea (AD 325), the church did not follow Origen but repudiated subordinationism and affirmed the full deity of the Son.” ↩

  19. Jonathan Elliot Swan, “The Eternally Begotten Word of God,” in “‘The Fountain of Life’: John Gill’s Doctrine of Christ’s Eternal Sonship” (PhD diss., The Southern Baptist Theological Seminary, 2021), 201. ↩ ↩2

  20. Archibald Alexander Hodge, Outlines of Theology (New York: Robert Carter and Brothers, 1879), chap. 9, “Holy Trinity,” 180. ↩

  21. Hodge, Outlines of Theology, chap. 9, 180-181. ↩

  22. Leopoldo A. Sánchez M., Introduction to Spirit Christology, 181, quoted in Samantha Ming Sum Cheng, “The Holy Spirit’s Four Visible Missions: A Biblical and Theological Interpretation of the Spirit’s Procession in Christ’s Life,” 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), 163. ↩