This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Christianity arrives as a distinct historical movement in Roman Judea following the crucifixion of Jesus of Nazareth in Jerusalem, carried out under the Roman prefect Pontius Pilate in either 30 or 33 CE. His death did not end the movement around him. His followers, centered first on Peter and, within a few years, on James the brother of Jesus, gathered into a community in Jerusalem proclaiming his resurrection.
That earliest community carried its new proclamation while still operating fully inside Second Temple Judaism, observing the Temple cult and Jewish law rather than breaking from either. What made it a distinct movement was the resurrection claim itself and the community organized around it, not yet any separation from the Jewish institutions and practice its members continued to keep.
What this marks for the tradition's spread is the starting point itself, the moment a distinct Christian movement can be said to have arisen as a historical phenomenon in Roman Judea, prior to and setting up everything that followed it: the movement's spread outward through Jewish diaspora networks across the Mediterranean, and within a generation, its extension into gentile mission beyond Judea and the Jewish world that had first produced it.