The First Council of Nicæa was convened in 325 AD by the Roman Emperor Constantine the Great to address divisions within the early Christian church. It aimed to achieve consensus on various theological issues, particularly the nature of Jesus Christ and his relationship to God the Father. One of the key outcomes was the formulation of the Nicene Creed, which established foundational Christian beliefs. The council also addressed the date of Easter and issued several canons to guide church practices. This gathering marked a significant moment in the development of early Christianity and its organizational structure.