In St. Anselm of Canterbury's foundational theological work, Why God Became Man (Cur Deus Homo), delve into a profound and meticulously reasoned exploration of the Incarnation and Atonement. Written in the 11th century as a dialogue, Anselm addresses the fundamental question of why God, being omnipotent, chose to redeem humanity through the sacrifice of His Son, Jesus Christ, rather than by a simple act of divine will. He masterfully articulates the satisfaction theory of atonement, arguing that humanity's sin incurred an infinite debt to God's honor, a debt only an infinite being—God Himself—could repay. This seminal text continues to be a cornerstone of Christian theology, offering timeless insights into the nature of God, sin, justice, and salvation.