325 AD

In 325 AD, the First Council of Nicaea was held, convened by Emperor Constantine I to address divisions within early Christianity. It aimed to unify Christian beliefs and practices, notably opposing Arianism, which questioned the divinity of Jesus. The Council resulted in the Nicene Creed, a statement of faith that defined core Christian beliefs. This event marked a significant step in the establishment of orthodox Christianity and the consolidating of church authority. It also highlighted the growing influence of Christianity within the Roman Empire, setting the stage for its future prominence in Western history.