“Jesus Christ is God in the form of man. The eternal appears in time. The Eternal Word, by Whom all things in the world were made, is now rejected by the world He made: “There was no room in the inn.” The Bird Who built the nest of the universe is hatched therein: He Who made His mother, is born of His Mother. All the nations of the earth are made of one blood, and now the Son of God partakes and assumes that blood as the new Head of Humanity.
At Bethlehem, heaven and earth meet: God and Man look each other in the face. A Mother for the first time in the universe, as she holds the babe in her arms, now looks “down” to heaven.
Because nothing greater than this will ever happen in the world, the peace of the world is conditioned upon that great act being repeated, in a reduced measure, in each of us. As God took upon Himself a human nature through the free consent of a woman, so too He asks us, through our free consent to give Him our nature, as Mary gave Him one. Then Christ begins to rule our mind: then we put on the mind of Christ, the love of Christ, the Spirit of Christ. Not many are willing to do this.
“He came unto His own and His own received Him not.” That is why there are Christmas cards with sleighs and fat men. But there will always be some who will see and understand the meaning, and to all who received Him “He gave them the power to become the sons of God.” We cannot have the word Christmas without Christ: so neither can we be Merry on the inside without Him."   Archbishop Fulton Sheen