Gnosticism denotes a cluster of ancient heresies unified by several core claims: (1) Dualism — the material world is evil, created not by the supreme God but by a lesser, ignorant or malevolent deity (demiurge); (2) Secret gnosis — salvation comes through secret, esoteric knowledge revealed to the spiritual elite, not through faith, repentance, or Christ's atoning work; (3) Divine spark — humans contain a divine spark imprisoned in evil matter; enlightenment means recognizing one's divine origin and escaping the physical; (4) Docetism — Christ could not have had a real physical body (since matter is evil); he only seemed (Greek: dokein) to be human. Against this, the Apostle John insists: "the Word became flesh" (John 1:14) and "every spirit that does not confess that Jesus Christ has come in the flesh is not from God" (1 John 4:2–3). Paul warns against "myths and endless genealogies" and secret "knowledge" (gnosis) falsely so-called (1 Tim 6:20). Gnosticism is Christianity's oldest and most persistent heresy in new forms — the "spiritual but not religious" impulse, New Age inner-light theology, and prosperity gospel's devaluation of suffering all carry Gnostic DNA.
• John 1:14 — "The Word became flesh and dwelt among us." — The incarnation is the anti-Gnostic anchor of orthodox Christianity.
• 1 John 4:2–3 — "Every spirit that confesses that Jesus Christ has come in the flesh is from God, and every spirit that does not confess Jesus is not from God. This is the spirit of the antichrist."
• Colossians 2:8–10 — "See to it that no one takes you captive by philosophy and empty deceit, according to human tradition… For in him the whole fullness of deity dwells bodily." — Written directly against proto-Gnostic speculation in Colossae.
• 1 Timothy 6:20–21 — "Avoid the irreverent babble and contradictions of what is falsely called knowledge [gnōsis], for by professing it some have swerved from the faith."
• Genesis 1:31 — "And God saw everything that he had made, and behold, it was very good." — The biblical creation is good, not evil — the foundational refutation of Gnostic dualism.
G1108 — gnōsis (γνῶσις): knowledge, understanding. Used positively in Paul (knowing God, knowing the mystery of Christ) but the Gnostics appropriated it for their secret-elite framework. Contrast: epignōsis (G1922) — full, accurate knowledge — the kind Paul prays believers would have.
G1097 — ginōskō (γινώσκω): to know, to come to know. In John's Gospel especially — knowing God is relational and salvific, not esoteric or elite.
Gnosticism never died — it metastasized. Modern forms include: (1) New Age spirituality — the "divine self" within, spiritual evolution, secret energy knowledge; (2) Progressive Christianity's devaluation of the physical resurrection (Christ's "spiritual" victory over death); (3) Prosperity gospel's contempt for suffering and the body's weakness; (4) The perennial Western fascination with "hidden knowledge" — from Freemasonry to the Nag Hammadi texts to Dan Brown's Da Vinci Code. The church must insist: matter matters. The resurrection is bodily. The creation is good. Salvation is not escape from the physical but its redemption. Christianity is irreducibly incarnational — which is exactly what Gnosticism cannot tolerate.