The Nicene Creed is recited as an entire credo, a statement of belief in accordance with the teachings of the Catholic Church, and it is read by all members of the Church at various times in private and in ceremony. The Creed affirms an individual's belief in the Holy Trinity of the Father, the Son and the Holy Ghost.
The Nicene Creed begins with an affirmation of belief in God as the Father, a judge and caretaker of His creations. It moves on to a much longer affirmation of belief in God in the person of Jesus Christ, the redeemer of humanity who died for its sins, before ending with an affirmation first of belief in the Holy Spirit and finally in the legitimacy of the Catholic Church.
The Trinity is a central belief in Catholic theology. It holds that God is both indivisible and composed of three parts by which humanity can understand Him. The Creed exists to render this belief easily comprehensible and to allow believers to process it for themselves.
The Nicene Creed is one of the foundational credos of the Catholic Church. It is very important internally and is frequently recited by clergy and by lay members of the Church confirming their beliefs upon being invested.