As it is with the Christian life, if we want to see clearly … as God sees … we have to look at the 'big picture' of salvation. If we want to understand Jesus' death, for instance, we need to begin with His birth and when we do, we will undoubtedly learn something very interesting . . . that He was born to die.
If you want to get technical, that 'pieta' moment first occurred not on Calvary, but in Bethlehem. The manger's wood was a foreshadowing; it is the 'cross' of Christmas. There is far more going on at Jesus' birth than many of us realize upon first glance.