"The Anatomy of Estrangement: A Study of Sin," systematically examines the Christian doctrine of sin, known as Hamartiology. It begins by situating sin as a foundational concept in Christian theology, asserting that understanding it is crucial for comprehending redemption. The text then explores the biblical portrayal of sin through a lexical analysis of Hebrew and Greek terms, illustrating it as failure, corruption, and rebellion, and examines foundational narratives like the Fall, Cain and Abel, and the Tower of Babel. Furthermore, it traces the theological systematisation of sin, detailing the development of Original Sin, particularly through Augustine, and contrasting the distinct views of Roman Catholicism, Eastern Orthodoxy, and Protestantism. The report also addresses the pastoral application of sin and grace, differentiating between guilt and shame and outlining the dynamics of confession, repentance, and forgiveness. Finally, it discusses the practical implications of sin in a fallen world, encompassing its effects on moral life, corporate and systemic injustices, and the concept of ecological sin, ultimately highlighting sin's role in magnifying the grace of God.