"Our profession of faith begins with God, for God is the First and the Last, the beginning and the end of everything. The Credo begins with God the Father, for the Father is the first divine person of the Most Holy Trinity; our Creed begins with the creation of heaven and earth, for creation is the beginning and the foundation of all God's works."
---the Catechism of the Catholic Church, no. 198
Catholic belief is succinctly expressed in the profession of faith or credo called The Nicene Creed.