During which council was the Nicene Creed expanded?

The Nicene Creed was expanded during the Council of Constantinople, which took place in 381 AD. This council sought to address various theological disputes arising from the earlier Council of Nicaea (325 AD) and to further clarify Christian beliefs, particularly concerning the nature of the Holy Spirit. The original Nicene Creed affirmed the divinity of Jesus Christ, and the expansion at Constantinople included additional wording that clarified the Holy Spirit's role, solidifying the doctrine of the Trinity.

This development was significant because it aimed to unify the Christian community by establishing a clearer understanding of key theological concepts, thus maintaining doctrinal integrity and addressing heretical views that had arisen. By incorporating statements about the Holy Spirit, the expanded Nicene Creed became a foundational element of Christian orthodoxy, still recited by many Christian denominations today.

The other councils mentioned did not contribute to the expansion of the Nicene Creed in this way; rather, they focused on different theological issues or clarified prior statements. The Council of Chalcedon, for instance, dealt with Christology, while the Council of Ephesus addressed Christ's nature and the role of Mary. The Council of Jerusalem is often regarded as a pivotal gathering in early Church history, but it did