Right now somewhere in the world, a five-year-old girl is minutes away from being brutally raped and murdered.
God knows that this will happen (he is omniscient and therefore knows all facts about the past present and future).
He could stop it (he is all-powerful).
But instead, he folds his arms and watches it happen.
Does He? And does He
always?
If God constantly intervened to eradicate the evil consequences of evil choices humans make, would they be truly free moral agents? What would your life be, do you think, if God altered the effect of every evil choice you made, conforming the result to His will? If every time you indulged a lustful thought, or fudged on the truth, or acted selfishly, or lost your temper, God interrupted to halt the thought or act, negating your sinful choice in favor of His own holy will and way, what would your life be like?
The classic theodicy here is to invoke human free will as the reason for all the needless suffering. But of course, God could easily stop the crime without impinging on anyone's free will (he's a god after all). So that doesn't work.
Oh? How so? If God did as you describe here, how would we really be free?
Another common response is that there is some greater good that comes out of five-year-olds being brutally raped and murdered. We just don't understand it. This is a dangerous argument because it supposes that the only way for the universe to get from its current state to the state of greater good MUST involve the rape and murder of a five-year-old.
This would imply either that God is not powerful or clever enough to get to the state of greater good without the rape and murder of a five-year-old, or that it's specifically the rape and murder of a five-year-old that God wants. (There are no other options as the two conditions are mutually exclusive if God is omnipotent)
Sometimes, God is simply allowing sin to run its course to illustrate to us just how "exceedingly sinful" sin is. We get a glimpse of why God HATES sin, the sin with which we are often quite comfortable, by letting sin bear its death-bringing "fruit" fully.
In a world of genuinely free creatures it is possible that God cannot intervene at every turn to negate the effects of the choices of these creatures and maintain genuine creaturely freedom. If this is even possible, it defeats your objection here.
So it follows that God must WANT the rape and murder of the five-year-old to take place as he is capable of stopping it but chooses not to.
How do you square that with the claim of God as benevolent?
God wants genuine freedom for His creatures. Such freedom is vital to the love He wants them to express to Himself and toward each other. But, this freedom to choose God necessarily entails the freedom not to choose God. The knife sharp and strong enough to carve wood is necessarily also capable of piercing and cutting human flesh; one simply can't have a knife of the former sort without also having a knife of the latter sort. So, too, with God making us genuinely free moral agents. We can't be made capable of freely choosing to love God without also being capable of hating Him. And when free creatures spurn God, the Source of all light, truth and life, they unavoidably turn to darkness, falsehoods and death. God no more wants the latter circumstance than a maker of a wood-carving knife wants the knife he's made to create beautiful carvings to be used to wound and kill one of his fellows.