Written in 325 CE as a statement of the Christian faith, the was adopted and authorized as a true expression in the year 381 CE in Constantinople
The Nicene Creed, also known as the Niceno-Constantinopolitan Creed, was written in 325 CE in response to various theological disputes within the early Christian church. It was formulated during the First Council of Nicaea, which aimed to establish a unified Christian doctrine and combat the Arian heresy.
However, the version of the creed that is often recited today is the one that was revised and authorized in the year 381 CE during the First Council of Constantinople. This council further developed and expanded upon the content of the Nicene Creed, particularly in addressing the nature of the Holy Spirit. The revised version clarified the equality of the Holy Spirit with God the Father and God the Son, emphasizing the Trinitarian doctrine.
Since then, the Nicene Creed, in its revised form, has played a central role in Christianity as a statement of faith accepted by various Christian denominations, including the Roman Catholic Church, Eastern Orthodox Church, and many Protestant traditions. It is recited during liturgical services, such as the Mass or Divine Liturgy, to affirm the common beliefs of the Christian community.