Council of Nicaea (325 AD)

The Council of Nicaea in 325 AD was a major gathering of Christian leaders convened by Emperor Constantine to address theological disagreements. The primary issue was the nature of Jesus Christ and his relationship to God. The council produced the Nicene Creed, a statement of faith affirming that Jesus is "begotten, not made," and of the same divine essence as God the Father. This helped unify Christian doctrine, combat heresies, and establish foundational beliefs that shaped Christianity's future. The council was significant in defining orthodox Christian belief and strengthening the church’s organizational structure.