The "Doctrine of Sin" refers to the theological understanding of sin in various religious traditions, particularly in Christianity. It defines sin as an act or state of disobedience against God and His moral laws. This doctrine emphasizes that all humans are inherently sinful due to the original sin of Adam and Eve, which introduced a separation between humanity and God. In many religious teachings, sin is categorized into different types, such as mortal and venial sins in Catholicism. The doctrine also addresses the consequences of sin, including spiritual death and the need for redemption, often through faith in Jesus Christ or other means of atonement, depending on the specific beliefs of the tradition.