Why does God allow evil and suffering? In the philosophy of religion, this paradox is known as the Problem of Evil, often regarded as the “death-blow” to the Judeo-Christian-Islamic deity. 

Russell explains:

“The world, we are told, was created by a God who is both omnibenevolent (all-loving) and omnipotent (all-powerful). Before He created the world He foresaw all the pain and misery that it would contain; He is therefore responsible for all of it. It is useless to argue that the pain in the world is due to sin. In the first place, this is not true; it is not sin that causes rivers to overflow their banks or volcanoes to erupt. But even if it were true, it would make no difference.