The death of Jesus was qualitatively different from any other death. The physical pain was nothing compared to the spiritual experience of cosmic abandonment. Christianity alone among the world religions claims that God became uniquely and fully human in Jesus Christ and therefore knows firsthand despair, rejection, loneliness, poverty, bereavement, torture and imprisonment. On the cross he went beyond even the worst human suffering and experienced cosmic rejection and pain that exceeds our as infinitely as his knowledge and power exceeds ours. In his death God suffers in love, identifying with the abandoned and godforsaken. Why did he do it? The Bible says that Jesus came on a rescue mission for creation. He had to pay for our sins so that some day he can end evil and suffering without ending us.
Let’s see where this has brought us. If we ask again the question: ‘Why does God allow evil and suffering to continue?’ and we look at the cross of Jesus, we still do not know what the answer is. However, we now know what the answer isn’t. It can’t be that he doesn’t love us. It can’t be that he is indifferent or detached from our condition, God takes our misery and suffering so seriously that he was willing to take it on himself.
Timothy Keller, The Reason for God, page 30