Dear brothers and sisters listening to me here in Rome and throughout the world, I joyfully proclaim the message of Christmas: God became man; he came to dwell among us. God is not distant: he is “Emmanuel”, God-with-us. He is no stranger: he has a face, the face of Jesus.
This message is ever new, ever surprising, for it surpasses even our most daring hope.
First of all, because it is not merely a proclamation: it is an event, a happening, which credible witnesses saw, heard and touched in the person of Jesus of Nazareth! Being in his presence, observing his works and hearing his words, they recognised in Jesus the Messiah; and seeing him risen, after his crucifixion, they were certain that he was true man and true God, the only-begotten Son come from the Father, full of grace and truth (cf. Jn 1:14).
“The Word became flesh”. Before this revelation we once more wonder: how can this be? The Word and the flesh are mutually opposed realities; how can the eternal and almighty Word become a frail and mortal man? There is only one answer: Love. Those who love desire to share with the beloved, they want to be one with the beloved, and Sacred Scripture shows us the great love story of God for his people which culminated in Jesus Christ.
God in fact does not change: he is faithful to himself. He who created the world is the same one who called Abraham and revealed his name to Moses: “I am who I am … the God of Abraham, Isaac and Jacob … a God merciful and gracious, abounding in steadfast love and faithfulness (cf. Ex 3:14-15; 34:6). God does not change; he is Love, ever and always. In himself he is communion, unity in Trinity, and all his words and works are directed to communion. The Incarnation is the culmination of creation. When Jesus, the Son of God incarnate, was formed in the womb of Mary by the will of the Father and the working of the Holy Spirit, creation reached its high point. The ordering principle of the universe, the Logos, began to exist in the world, in a certain time and space. CONTINUED
Here is Archbishop Fulton Sheen discussing the true meaning of Christmas: