The argument from evil is an argument which attempts to prove that God does not exist by arguing that the amount of evil (pain, suffering, injustice) in the world is incompatible with the existence ofan all-powerful, all-knowing, and morally perfect being. Theists have traditionally responded to this argument by saying that God is not morally responsible for failure to prevent evil because he cannot do so consistently with maintaining human free agency, because the evil is necessary to build our personal character and develop our talents, because it is necessary to provide a test of our faith, etc.