Why is there a problem with evil: The inconsistent triad

The Inconsistent Triad

Created by the ancient Greek Philosopher Epicurus. The Inconsistent Triad is a way of expressing three different ideas that cannot all be true at the same time. 

God is Omnipotent and God is omnibenevolent: 

If God is both all powerful and all loving this should mean that evil would not exist, but we know that it does, so…