The Logical Problem of Evil

This is a purely deductive argument, and attempts to show that the existence of evil is logically incompatible with the existence of God. 

The problem exists with the compatiblility of omnibenevolence, omnipotence and evil. 

e.g. If God is willing to prevent evil, he is omnibenevolent, however it exists so he cannot be omnipotent, and vice versa.