What is the Nicene Creed, and why do we say it?

The Nicene Creed is a concise, authoritative summary of the Christian faith, especially the doctrines of the Trinity and the Incarnation. Catholics ordinarily proclaim it at Sunday Mass and solemnities to confess together the faith received from the apostles.

Where it came from. The Creed developed through the first two ecumenical councils, Nicaea in 325 and Constantinople in 381. The Council of Nicaea answered Arius, who taught that the Son was a created being rather than truly God. The Council confessed that Jesus Christ is “God from God, Light from Light, true God from true God,” and “consubstantial with the Father.” Constantinople expanded the Creed’s confession of the Holy Spirit and the Church. It is therefore often called the Niceno-Constantinopolitan Creed (CCC 195).

What it teaches. The Creed follows a Trinitarian structure. We profess faith in one God, then name the Father, the Son, and the Holy Spirit. Jesus is eternally begotten, fully divine, and through Him all things were made (Jn 1:1-3). He truly became man, was crucified, rose bodily, ascended, and will return in glory. The Holy Spirit is Lord and giver of life, not a creature or impersonal force. The Creed also professes one, holy, catholic, and apostolic Church, one Baptism for the forgiveness of sins, the resurrection of the dead, and eternal life (CCC 198-202).

Why Catholics say it at Mass. The Creed is a response to the Word of God proclaimed in Scripture and explained in the homily. By saying “I believe,” each worshiper personally assents to the Church’s shared faith. This profession also prepares the congregation to enter the Eucharistic part of the Mass. Christian faith has personal content, but it is never a private invention. We receive it through the Church and confess it with the Church (CCC 166-167).

Why exact words matter. The Creed protects revealed truth from distortion. Calling the Son “consubstantial” with the Father means that the Father and Son possess the one divine nature. Saying that Christ “became man” affirms a real Incarnation, not a divine appearance. These phrases arose because mistaken teachings used biblical words while denying biblical truth. The Church’s creeds give faithful language for confessing the mystery revealed in Scripture (CCC 186-197).

How to pray it. At Mass, resist reciting the Creed mechanically. Listen to each article and make it your own act of faith. If a line troubles you, study that teaching rather than silently replacing it with a meaning of your own. The Creed can also serve as a simple framework for personal prayer and examination of faith.