Total depravity is a Protestant theological doctrine derived from the concept of original sin. It teaches that, as a consequence of the Fall, every person born into the world is enslaved to the service of sin as a result of their fallen nature and, apart from the efficacious (irresistible) or prevenient (enabling) grace of God, is completely unable to choose by themselves to follow God, refrain from evil, or accept the gift of salvation as it is offered.