Fate: Marginalized by 4th century orthodoxy; the Gospel of Thomas condemned. The Nag Hammadi copy (Coptic, ~350 AD) survived only because it was buried. Thomas Christianity in India (Thomas Christians) survived by geographic separation from imperial enforcement.

Thomasine Christianity is centered on the apostle Thomas as the privileged recipient of Jesus’s secret teachings — distinct from and in some tension with the Petrine tradition that becomes orthodox Christianity. The Gospel of Thomas (~100–140 AD) contains 114 sayings of Jesus with no narrative, no crucifixion, no resurrection — salvation comes through interpreting the hidden sayings and recognizing the divine light within. Many scholars believe some Thomas sayings are as early as or earlier than canonical gospel material. The Acts of Thomas and the Hymn of the Pearl round out the tradition. Thomas Christianity spread east along trade routes to Edessa, Persia, and India — the Syriac church and the Saint Thomas Christians of Kerala trace their origins here.

What happens when a group is declared heretical: The process is rarely sudden. It typically begins with episcopal letters condemning a teaching, escalates to synodal condemnation at a regional council, and — after Constantine — can be ratified by an ecumenical council backed by imperial authority. Once condemned: (1) Leaders are excommunicated, exiled, or — in later centuries — handed to secular authorities for execution. (2) Writings are ordered burned; possession becomes a criminal offense. Eusebius records that after Nicaea, Constantine ordered Arian books destroyed under penalty of death. The same logic applied to Gnostic texts — which is why the Nag Hammadi library was buried in a sealed jar around 367 AD, the same year Athanasius’s Easter letter listed the NT canon and ordered non-canonical books removed from churches. (3) Communities are dissolved by force where state power reaches; in regions beyond imperial reach they survive for centuries. (4) Memory is controlled — the only surviving accounts of most heresies are hostile summaries by their opponents (Irenaeus, Tertullian, Epiphanius’s Panarion), meaning we are largely reading prosecution briefs, not the groups’ own self-understanding.