Christianity emerged as a reform movement within Judaism, led by Jesus Christ, who sought to challenge the corruption of Jewish priests. Following his crucifixion, his disciples spread his teachings among Jewish communities in the Roman Empire, leading to debates about inclusivity for non-Jews. The liberal faction, led by Paul, prevailed, allowing gentiles to join without adhering to Jewish customs, which facilitated Christianity’s growth. Its promise of social security, spiritual fulfillment, and equality resonated with the poor and slaves. Despite persecution, the faith expanded, ultimately becoming a major world religion through its human-centric ideology and community-based support system.