Augustine's life - This Sunday School explores the historical development of Christian thought on original sin, tracing key theological trajectories from the early church (exemplary, eschatological, and covenantal) before focusing on Augustine's pivotal role in shaping the Western understanding of humanity's fallen state through Adam. It highlights Augustine's personal journey from a wayward youth shaped by Manichaean dualism and classical philosophy to a profound spiritual conversion in a garden, where he encountered Scripture as a divine call to put on Christ. His life, marked by deep personal struggle, maternal devotion, and intellectual rigor, informed his theological contributions, including his doctrine of original sin, the imputation of guilt, and the necessity of divine grace. Pastor Jason underscores how Augustine's experiences and writings, particularly in 'The Confessions' and 'The City of God,' profoundly shaped Christian theology, especially regarding human nature, sin, and redemption, while also acknowledging the complexity and evolution of his thought over time.