At the conclusion of the council, Emperor Theodosius declared that all bishops must confess the equal divinity of all three Persons of the [[Trinity]] and be in communion with certain of the bishops who attended. The Creed of Nicaea-Constantinople in later centuries became the standard of Christian orthodoxy and Trinitarian profession. [[Saint Patrick]] the Apostle of Ireland famously used the shamrock in the fifth century to explain the doctrine of the Trinity declared at the [[Council of Nicea]] and this First Council of Constantinople in the fourth century. | At the conclusion of the council, Emperor Theodosius declared that all bishops must confess the equal divinity of all three Persons of the [[Trinity]] and be in communion with certain of the bishops who attended. The Creed of Nicaea-Constantinople in later centuries became the standard of Christian orthodoxy and Trinitarian profession. [[Saint Patrick]] the Apostle of Ireland famously used the shamrock in the fifth century to explain the doctrine of the Trinity declared at the [[Council of Nicea]] and this First Council of Constantinople in the fourth century. |