Problems with arguements against evil
Several problems can be found against arguments for the problem of evil. St Augustine's defines moral evil as caused by humanities free will, he says that because humans are free, they are concupiscent and choose to be morally evil. He then goes on to explain that because of original sin and the fall from evil, the world has been corrupted at the beginning of time.
These ideas are particularly close minded, thinking that humans were doomed to be evil. Claiming that the reason for natural disasters, which case million around the world to suffer or die, was due to an event which most humans around the world had no part in (Adam and eve eating the fruit of Eden).
This theory does not go on to explain why, considering the theistic god is meant to be omnibenevolent, that 'he' allows for this natural evil to continue even though 'he' should have forgiven humans after the coming of Jesus.
Augustine confuses the situation further by saying that the evil is hereditary, that this 'original sin' is un-avoidable, that every human, once born has a tendency to become evil. This idea clearly avoids or even ignores ideas of human compassion or their want to do good. Even without religion or a god.
Iranaeus has a different point of view, claiming that it is the 'theistic god' responsibility that there is moral evil in the world.