St. Augustine of Hippo wrote about the importance of Sacred Scripture, Sacred Tradition, and the authority of the Church, which would later be known as the teaching authority of the Magisterium. His writings expressed the defense of Sacred Scripture and Sacred Tradition that forms the deposit of faith, which is unchanging, objective, fundamental, and infallible. Sacred Tradition derives from apostolic authority and apostolic succession, and Christ passed down His authority to His apostles. I will go over each of St. Augustine’s works and put them in perspective.