“Faith, like all strong conviction, has a desire to utter itself before others— ‘Out of the abundance of the heart the mouth speaketh;’ ‘I believe, therefore I confess’ (Credo, ergo confiteor).”
Schaff, Philip. The Creeds of Christendom: Volume 1 The History of Creeds (Kindle Locations 310-312). Laconia Publishers. Kindle Edition.
A.D. 325 The Nicene Creed