Catechism › PART ONE: THE PROFESSION OF FAITH › CHAPTER THREE MAN'S RESPONSE TO GOD › Article 2 WE BELIEVE › ¶ 178 ¶ 178 In Brief We must Believe in no one but God: the Father, the Son and the Holy Spirit. Linked Concepts Believe Father God Son Holy Spirit ← ¶ 177 Browse ¶ 179 →