Christianity and Judaism
In contrast to the Jewish view of being morally balanced, Original Sin refers to the idea that the sin of Adam and Eve's disobedience (sin "at the origin") has passed on a spiritual heritage, so to speak. Christians teach that human beings inherit a corrupted or damaged human nature in which the tendency to do bad is greater than it would have been otherwise, so much so that human nature would not be capable now of participating in the afterlife with God. This is not a matter of being "guilty" of anything; each person is only personally guilty of their own actual sins. However, this understanding of original sin is what lies behind the Christian emphasis on the need for spiritual salvation from a spiritual Saviour, who can forgive and set aside sin even though humans are not inherently pure and worthy of such salvation. Paul the Apostle in Romans and I Corinthians placed special emphasis on this doctrine, and stressed that belief in Jesus would allow Christians to overcome death and attain salvation in the hereafter.
Theology of Søren Kierkegaard
Sin is separation from God but despair over sin is separation again. Kierkegaard said, "The consciousness of sin definitely belongs to the consciousness of the forgiveness of sin." Why would someone sit and reflect on sin to such an extent that an eternal happiness is exchanged for an eternal unhappiness or even a temporal unhappiness? This reflection is done in time but the consequence of the reflection leads one to lose hope in the possibility of any good coming from oneself. Kierkegaard says Christianity invites the single individual to become a partaker not only of the consciousness of sin but also of the consciousness of forgiveness but we seem to concentrate on the former to a remarkable degree. He said the following in "Three Discourses on Imagined Occasions" (1845) and "Practice in Christianity" (1850):