Original sin

Original sin was a religious concept linked to the Garden of Eden story, and the serpent within. Father Roberto, of the Church of Forgotten Saints, expressed that this was an aspect of the story which could or could not be "believed in". (PROSE: Halflife)

Behind the scenes
Original sin is the idea in Christian theology that humanity has existed in a state of sin since Adam and Eve rebelled, and were banished from the Garden of Eden.