Quote from Free Thinker:
believers are taught that jesus/god is omnipotent. would a loving god stand by and let bad preachers fleece people in his name?
Epicurus: Is God willing to prevent evil, but not able? Then he is not omnipotent. Is he able, but not willing? Then he is malevolent. Is he both able and willing? Then whence cometh evil? Is he neither able nor willing? Then why call him God?
the discussion on why God does not intervene when bad things happen to good people (or any other version of this argument) was something that was difficult for me to deal with for a long time. that is, of course, until i learned about the concept of "Occupied Territory". in Mere Christianity, one of the things that C.S. Lewis argues is that God does not intervene in the happenings of the world because it is under enemy reign. Ie, the reign of evil. much of mankind has temporarily chosen to side with evil, and as such, the world is subject to the evils of it's creation and choice. eventually, God will intervene - so be careful what you wish for. for when He does, it will be to destroy the world as we know it.
i'm not trying to sell you on this idea, or even the idea of God. but this is how i have found it is explained in a way i can grasp.