The Savior—yes, the Messiah, the Lord—has been born today in Bethlehem, the city of David! And you will recognize him by this sign: You will find a baby wrapped snugly in strips of cloth, lying in a manger. (Luke 2:11-12, NLT)
The birth of this little boy [Jesus] is the beginning of a confrontation between the kingdom of God—in all its apparent weakness, insignificance and vulnerability—and the kingdom of the world. Augustus never heard of Jesus of Nazareth. But within a century or so his successors in Rome had not only heard of him; they were taking steps to obliterate his followers. Within just over three centuries the Emperor himself became a Christian. When you see the manger on a card, or in a church, don’t stop at the crib. See what it’s pointing to, it is pointing to the explosive truth that the baby lying there is already being spoken of as the true king of the world. — N. T. Wright