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The '''First Council of [[Constantinople]]''' ("Constantinople I") was called by Emperor [[Theodosius]] in A.D. 381 to combat the [[Arian]] heresy, which had not ended after being condemned at the [[Council of Nicaea]]; and also to combat the heresy of the Macedonians, who denied the divinity of the [[Holy Spirit]].

The '''First Council of [[Constantinople]]''' ("Constantinople I") was called by Emperor Theodosius in A.D. 381 to combat the [[Arian]] heresy, which had not ended after being condemned at the [[Council of Nicaea]]; and also to combat the heresy of the Macedonians, who denied the divinity of the [[Holy Spirit]].

150 bishops attended.  They reaffirmed and expanded the [[Nicene Creed]] to the version currently known, affirming the equal divinity of all three Persons of the [[Trinity]].

150 bishops attended.  They reaffirmed and expanded the [[Nicene Creed]] to the version currently known, affirming the equal divinity of all three Persons of the [[Trinity]].