In What Is God?, Kevin Vost explores the nature of God through the teachings of St. Thomas Aquinas. He argues that just as we cannot love someone we do not know, we must understand God to truly love Him. Drawing from Summa Theologica, Vost breaks down Aquinas' complex theological insights into clear and accessible explanations. The book examines God's attributes, His perfection, knowability, and paradoxical questions about His power. By distilling Aquinas' wisdom for modern readers, What Is God? offers a deeper understanding of the divine.