Father Barron considers St. Anselm’s description of God as “that than which nothing greater can be thought,” and goes on to explain St. Thomas Aquinas’ arguments which support the claim that God truly exists. He also speaks from the Catholic tradition about the nature of God and the challenging question of evil and the existence of God. To provide a vision of the ineffable majesty and mystery of God, Father Barron invites us to the heights of the Sinai desert and makes his way to mysterious Istanbul, walks the glittering streets of Paris and then captivates the viewer with the glories of the Sistine Chapel in Rome.