The Council of Nicea took place in AD 325 by order of the Roman Emperor Caesar Flavius Constantine. Nicea was located in Asia Minor, east of Constantinople. At the Council of Nicea, Emperor Constantine presided over a group of church bishops and other leaders with the purpose of defining the nature of God for all of Christianity and eliminating confusion, controversy, and contention within the church. The Council of Nicea overwhelmingly affirmed the deity and eternality of Jesus Christ and defined the relationship between the Father and the Son as “of one substance.” It also affirmed the Trinity—the Father, Son, and Holy Spirit were listed as three co-equal and co-eternal Persons.