Second-Century Christians Argue Fiercely Over Who Jesus Was
Gnostics, Marcionites, and a dozen other groups make the plural 'Christianities' the only accurate word
Quick facts
- Period
- 2nd century CE
- Key disputed teacher
- Marcion (excommunicated c. 144 CE)
- Rival movement
- Gnosticism (Valentinus and others)
- Core dispute
- Nature and divinity of Jesus, number of gods
What happened
Long before any council settled Christian doctrine, second-century Christians held sharply conflicting beliefs about basic questions: whether Jesus was fully divine, fully human, or some combination, and what kind of body he had. Marcion, an influential teacher eventually declared a heretic, argued for two separate gods, a harsh creator god of Jewish scripture and a higher god revealed uniquely through Jesus, and edited his own version of Luke's Gospel to remove material he thought contaminated by Jewish influence. Valentinus and other Gnostic teachers taught that salvation came through secret knowledge of the divine rather than through the death and resurrection central to what became mainstream Christian teaching. Brigham Young University's Religious Studies Center describes the category of Christian in this period as capacious, encompassing a genuine variety of beliefs and practices that varied by region.
Why it matters
This period shows that Christian doctrine was not handed down complete and then merely defended; it was worked out through direct competition between rival teachers and communities, a process that later councils like Nicaea and Chalcedon would try, with only partial success, to bring to a close.
How we know
Some second-century texts by Marcion and Gnostic teachers survive only in fragments quoted by their theological opponents, while others, including a cache of Gnostic writings found at Nag Hammadi, Egypt, in 1945, preserve original material in the movements' own words.
Sources
- Religious Studies Center, Brigham Young University. Christianity in the Second Century · Reputable sourcersc.byu.edu · The domain "rsc.byu.edu" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
- Christian History Institute. Gnostics: Did You Know? · Reputable sourcechristianhistoryinstitute.org · The domain "christianhistoryinstitute.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
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Part of a timelineHistory of Christianity28 events · A crucified Jewish teacher, a persecuted sect that became an empire's official religion, and two thousand years of councils, schisms, and missions that carried it to every continentView all →