Total depravity (also called total inability or total corruption) is a biblical doctrine closely linked with the doctrine of original sin as formalized by Augustine and advocated in many Protestant confessions of faith and catechisms, especially in Calvinism. The doctrine understands the Bible to teach that, as a consequence of the the Fall of man, every person born into the world is morally corrupt, enslaved to sin and is, apart from the grace of God, utterly unable to choose to follow God or choose to turn to Christ in faith for salvation.