Chapter 3 — Part I: The Creed — Article I: I Believe in God, the Father Almighty, Creator of Heaven and Earth
Section 6. Faith Requires Open Profession — The pastor should also teach that he who says, I believe, besides declaring the inward assent of the mind, which is an internal act of faith, should also openly profess and with alacrity acknowledge and proclaim what he inwardly and in his heart believes. For the faithful should be animated by the same spirit that spoke by the lips of the Prophet when he said: I believe; and therefore did I speak, and should follow the example of the Apostles who replied to the princes of the people: We cannot but speak the things which we have seen and heard. They should be encouraged by these noble words of St. Paul: I am not ashamed of the gospel. For it is the power of God unto salvation to every one that believeth; and likewise by those other words; in which the truth of this doctrine is expressly confirmed: With the heart we believe unto justice; but with the mouth confession is made unto salvation.