Article 2 WE BELIEVE

From The Catechism of the Catholic Church

167
“I believe” (Apostles’ Creed) is the faith of the Church professed
personally by each believer, principally during Baptism. “We believe”
(Niceno-Constantinopolitan Creed) is the faith of the Church confessed by the
bishops assembled in council or more generally by the liturgical assembly of
believers. “I believe” is also the Church, our mother, responding to
God by faith as she teaches us to say both “I believe” and “We
believe”.

PART ONE: THE PROFESSION OF FAITH