← LineageCouncil Anniversary for · Sunday, 9 July 2028

Council · Today in 381

First Council of Constantinople

Manuscript miniature of the First Council of Constantinople.
Constantinople I gave the church the creed most Christians now call Nicene. Bibliotheque nationale de France, via Wikimedia Commons · Public domain

Constantinople I finished what Nicaea had started. The council reaffirmed the Son's full divinity and answered those who denied the Holy Spirit's divinity, giving the church the expanded Nicene-Constantinopolitan Creed. That is the creed most Christians mean when they say 'the Nicene Creed' today. The result was a clearer Trinitarian grammar: one God, Father, Son, and Holy Spirit.

One God: Father, Son, and Holy Spirit.

Highlights

  • Reaffirmed Nicaea.
  • Confessed the Spirit's divinity.
  • Expanded the creed.
  • Closed the main Trinitarian controversy.

How it happened

What happened

Theodosius called Eastern bishops to Constantinople after decades of conflict over the Nicene faith.

The argument

The council had to reaffirm Nicaea and answer groups that denied the Holy Spirit's full divinity.

What changed

The creed was expanded into the form most Christians now know as the Nicene Creed.

Why it matters

Constantinople gave the church stable language for confessing Father, Son, and Holy Spirit as one God.

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Cover of On the Holy Spirit by Basil of Caesarea
Daily reading

Book of the day

On the Holy Spirit

Basil of Caesarea

A reading pick tied to today's figure, quote, era, or event. Basil gives the mature Cappadocian defense of the Spirit's divinity after Nicaea.

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Today: First Council of Constantinople (381) — Patristic Lineage