When Jesus died on the cross the mercy of God did not become any greater. It could not become any greater, for it was already infinite. We get the odd notion that God is showing mercy because Jesus died. No--Jesus died because God is showing mercy. It was the mercy of God that gave us Calvary, not Calvary that gave us mercy. If God had not been merciful there would have been no incarnation, no babe in the manger, no man on a cross and no open tomb.