The Divinity and Humanity of Jesus Christ in Theology
The New Testament presents Jesus Christ as both fully divine and fully human, a dual identity that became the central christological affirmation of historic Christianity. The Gospel of John opens with the declaration that "the Word was God" and "the Word became flesh and dwelt among us" (John 1:1, 14), establishing the framework for what would become the doctrine of the Incarnation—"that act of grace whereby Christ took our human nature into union with his Divine Person" [3]. This union is described as hypostatical, meaning personal: "the two natures are not mixed or confounded, and it is perpetual" [3].
The Biblical Witness to Christ's Divinity
Scripture attributes to Jesus the essential nature of deity. Paul writes in Colossians 2:9 that "in him dwelleth all the fulness of the Godhead bodily" [5, 6]. The Greek term theotes used here denotes "the ESSENCE and NATURE of the Godhead, not merely the divine perfections and attributes of Divinity," indicating that Christ "as man, was not merely God-like, but in the fullest sense, God" [6]. This indwelling is not merely the presence of divine power, as God was present in the tabernacle or temple, but something qualitatively different: the Godhead "resides in the human nature of Christ, in the highest and most exalt[ed manner]" [5].
The doctrine of the Trinity emerges from this christological foundation. The benediction in 2 Corinthians 13:14—"The grace of our Lord Jesus Christ, and the love of God, and the communion of the Holy Ghost"—is understood to prove "the doctrine of the Divine Trinity in unity," with the variety in the order of Persons demonstrating that "in this Trinity none is afore or after other" [4]. Christ's grace is placed first because "it is only by it we come to 'the love of God' the Father" [4].
The Reality of Christ's Human Nature
The human nature of Christ is equally essential to Christian theology and "was necessary to his mediatorial office" [2]. As 1 Timothy 2:5 states, "there is one God, and one mediator between God and men, the man Christ Jesus"—a text emphasizing that mediation required genuine humanity [2]. The Incarnation involved Christ "partaking of flesh and blood" (Hebrews 2:14), possessing "a human soul," and experiencing the full range of human limitations and experiences [2].
The Gospels document this humanity in concrete detail. Jesus was conceived in the Virgin's womb, born, circumcised, and grew in "wisdom and stature" [2]. He experienced hunger, thirst, weariness, and sleep [2]. He wept at Lazarus's tomb and over Jerusalem [2]. The catalogue of Christ's humility includes his poverty ("the Son of man hath not where to lay his head"), his submission to baptism, his association with tax collectors and sinners, his refusal of earthly honors, and his washing of the disciples' feet [1]. These actions were not mere appearances but genuine expressions of a human nature that could suffer, be tempted, and die.
The Hypostatic Union
The theological term for the union of divine and human natures in Christ is "hypostatic union"—a union in one person (hypostasis). This formulation preserves both the distinction of the natures and their inseparable unity. Divine attributes and actions are predicated of the one person who is both God and man: "A Divine Person was united to a human nature" [3]. This means that when Scripture speaks of Christ's actions, it refers to a single subject who acts according to both natures without confusion or separation.
The practical implications of this union appear throughout the New Testament. Acts 20:28 speaks of "the church of God, which he hath purchased with his own blood"—attributing human blood to God himself [3]. Romans 8:32 describes God as not sparing "his own Son," while 1 Corinthians 2:8 refers to the crucifixion of "the Lord of glory" [3]. These passages demonstrate that "human attributes and actions are predicated of him, and he of whom they are predicated is God" [3].
Christ as Judge in Human Nature
The appointment of Christ as judge illustrates the theological significance of his humanity. John 5:27 states that the Father "hath given him authority to execute judgment also, because he is the Son of man." This phrase—"because he is the Son of man"—indicates that Christ's humanity itself qualifies him for the judicial office. The "indwelling of the Son's essential life in humanity" makes human nature "the great theater and medium of divine display, in both the great departments of His work—life-giving and judgment" [8]. The "appointment of a Judge in our own nature is one of the most beautiful arrangements of divine wisdom in redemption" [8], ensuring that humanity is judged by one who has fully shared the human condition.
The Mystery of Godliness
Paul describes the Incarnation as "the mystery of godliness" in 1 Timothy 3:16, referring to "the incarnation of Christ, his birth of a virgin, the union of the two natures, divine and human, in his person" [7]. This mystery, "though revealed, and so to be believed, is not to be discerned nor accounted for, nor the modus of it to be comprehended by reason" [7]. It stands as "a great one, next, if not equal, to the doctrine of a trinity of persons in the divine essence" [7]. The mystery is not an invitation to irrationality but an acknowledgment that the mode of union transcends human categories while remaining the object of faith and worship.
The perpetuity of the union means that Christ remains both God and man eternally. The Incarnation was not a temporary assumption of flesh but a permanent union. The risen and ascended Christ retains his human nature, glorified but genuine, ensuring that humanity itself has been taken up into the life of God. This permanence grounds the Christian hope that human nature, redeemed and transformed, participates in the divine life through union with Christ.
Sources
- Torrey's Topical Textbook “Torrey's Topical Textbook: Humility of Christ, The — Declared by himself -- Mt 11:29. Exhibited in his Taking our nature. -- Php 2:7; Heb 2:16. Birth. -- Lu 2:4-7. Subjection to his parents. -- Lu 2:51. Station in life. -- Mt 13:55; Joh 9:29. Poverty. -- Lu 9:58; 2Co 8:9. Partaking of our infirmities. -- Heb 4:15; 5:7. Submitting to ordinances. -- Mt 3:13-15. Becoming a servant. -- Mt 20:28; Lu 22:27; Php 2:7. Associating with the despised. -- Mt 9:10,11; Lu 15:1,2. Refusing honours. -- Joh 5:41; 6:15. Entry into Jerusalem. -- Zec 9:9; Mt 21:5,7. Washing his disciples' feet. -- Joh 13:5. Obedi”
- Torrey's Topical Textbook “Torrey's Topical Textbook: Human Nature of Christ, The — Was necessary to his mediatorial office -- 1Ti 2:5; Heb 2:17; Ga 4:4,5; 1Co 15:21; Ro 6:15,19. Is proved by his Conception in the Virgin's womb. -- Mt 1:18; Lu 1:31. Birth. -- Mt 1:16,25; 2:2; Lu 2:7,11. Partaking of flesh and blood. -- Joh 1:14; Heb 2:14. Having a human soul. -- Mt 26:38; Lu 23:46; Ac 2:31. Circumcision. -- Lu 2:21. Increase in wisdom and stature. -- Lu 2:52. Weeping. -- Lu 19:41; Joh 11:35. Hungering. -- Mt 4:2; 21:18. Thirsting. -- Joh 4:7; 19:28. Sleeping. -- Mt 8:24; Mr 4:38. Being subject to weariness. -- Joh 4:6. ”
- Easton's Bible Dictionary “Easton's Bible Dictionary: Incarnation — That act of grace whereby Christ took our human nature into union with his Divine Person, became man. Christ is both God and man. Human attributes and actions are predicated of him, and he of whom they are predicated is God. A Divine Person was united to a human nature (Acts 20:28; Rom. 8:32; 1 Cor. 2:8; Heb. 2:11-14; 1 Tim. 3:16; Gal. 4:4, etc.). The union is hypostatical, i.e., is personal; the two natures are not mixed or confounded, and it is perpetual.”
- 2 Corinthians (Presbyterian) “Jamieson, Fausset & Brown on 2 Corinthians 13:14: The benediction which proves the doctrine of the Divine Trinity in unity. "The grace of Christ" comes first, for it is only by it we come to "the love of God" the Father (Joh 14:6). The variety in the order of Persons proves that "in this Trinity none is afore or after other" [Athanasian Creed]. communion--joint fellowship, or participation, in the same Holy Ghost, which joins in one catholic Church, His temple, both Jews and Gentiles. Whoever has "the fellowship of the Holy Ghost," has also "the grace of our Lord Jesus Christ," and "the love”
- Colossians (Baptist/Reformed) “John Gill on Colossians 2:9: For in him dwelleth all the fulness of the Godhead bodily. This is to be understood, not of the doctrine, or Gospel of Christ, as being a perfect revelation of the will of God; but of Christ, and particularly of his human nature, as consisting of a true body and a reasonable soul, in which the Godhead dwells in a most eminent manner: God indeed is everywhere by his powerful presence, was in the tabernacle and temple in a very singular manner, and dwells in the saints in a way of special grace; but resides in the human nature of Christ, in the highest and most exalt”
- Colossians (Presbyterian) “Jamieson, Fausset & Brown on Colossians 2:9: For--"Because." Their "philosophy" (Col 2:8) is not "after Christ," as all true philosophy is, everything which comes not from, and tends not to, Him, being a delusion; "For in Him (alone) dwelleth" as in a temple, &c. the fulness-- (Col 1:19; Joh 14:10). of the Godhead--The Greek (theotes) means the ESSENCE and NATURE of the Godhead, not merely the divine perfections and attributes of Divinity (Greek, "theiotes"). He, as man, was not merely God-like, but in the fullest sense, God. bodily--not merely as before His incarnation, but now "bodily ”
- 1 Timothy (Baptist/Reformed) “John Gill on 1 Timothy 3:16: And without controversy great is the mystery of godliness,.... What follows is so, the incarnation of Christ, his birth of a virgin, the union of the two natures, divine and human, in his person; this is a mystery, which though revealed, and so to be believed, is not to be discerned nor accounted for, nor the modus of it to be comprehended by reason: and it is a great one, next, if not equal, to the doctrine of a trinity of persons in the divine essence; and is a mystery of godliness, which tends to encourage internal and external religion, powerful and practical g”
- John (Presbyterian) “Jamieson, Fausset & Brown on John 5:27: because he is the Son of man--This seems to confirm the last remark, that what Christ had properly in view was the indwelling of the Son's essential life in humanity as the great theater and medium of divine display, in both the great departments of His work--life-giving and judgment. The appointment of a Judge in our own nature is one of the most beautiful arrangements of divine wisdom in redemption.”