The Objection: Evil and suffering.
Christianity teaches the existence of an all-powerful, all-good and loving God. But how that belief be reconciled with the horrors that occur daily? If there is a God, he must be either all-powerful but not good enough to want an end to evil and suffering, or he’s all-good but not powerful enough to bring an end to evil and suffering. Either way the God of the Bible couldn’t exist. for many people, this is not only an intellectual conundrum but also an intensely personal problem. Their own personal lives are marred by tragedy, abuse, and injustice.

Response:  If God himself has suffered our suffering isn’t senseless. First, if you have a God great and transcendent enough to be mad at because he hasn’t stopped evil and suffering in the world, then you have to (at the same moment) have a god great and transcendent enough to have good reasons for allowing it to continue that you can’t know. (You can’t have it both ways.) Second, though we don’t know the reasons why he allows it to continue, he can’t be indifferent or uncaring, because the Christian God (unlike the gods of all the other religions) takes our misery and suffering so seriously that he is willing to get involved with it himself. On the cross, Jesus suffered with us.

– Tim Keller