God has become man. He has become a child. Thus he fulfills the great and mysterious promise to be Emmanuel: God-with us. Now he is no longer unreachable for anybody. God is Emmanuel. By becoming a child, he offers us the possibility of being on familiar terms with him.
I am reminded here of a rabbinical tale recorded by Elie Wiesel. He tells of Jehel, a little boy, who comes running into the room of his grandfather, the famous Rabbi Baruch. Big tears are rolling down his cheeks. And he cries, My friend has totally given up on me. He is very unfair and very mean to me. Well, could you explain this a little more? asks the master.
Okay, responds the little boy. We were playing hide and seek. I was hiding so well that he could not find me. But then he simply gave up and went home. Isn't that mean? The most exciting hiding place has lost its excitement because the other stops playing.
The master caresses the boy's face. He himself now has tears in his eyes. And he says, Yes, this is not nice. But look, it is the same way with God. He is in hiding, and we do not seek him. Just imagine! God is hiding, and we people do not even look for him.
In this little story a Christian is able to find the key to the ancient mystery of Christmas. God is in hiding. He waits for his creation to set out toward him, he waits for a new and willing Yes to come about, for love to arise as a new reality out of his creation. He waits for man.
Pope Benedict XVI