Chapter 3 — Part I: The Creed — Article I: I Believe in God, the Father Almighty, Creator of Heaven and Earth
Section 15. The Unity Of Nature In God — From what is said it must also be confessed that there is but one God, not many gods. For we attribute to God supreme goodness and infinite perfection, and it is impossible that what? is supreme and most perfect could be common to many. If a being lack anything that constitutes supreme perfection, it is therefore imperfect and cannot have the nature of God.