God brings His first born Son into the world. He introduces Him, ushers Him in, unveils Him, and what have we here? The exact replica of God the Father.
Hebrews 1:1-6
1 In the past God spoke to our ancestors through the prophets at many times and in various ways, 2 but in these last days he has spoken to us by his Son, whom he appointed heir of all things, and through whom also he made the universe. 3 The Son is the radiance of God’s glory and the exact representation of his being, sustaining all things by his powerful word. After he had provided purification for sins, he sat down at the right hand of the Majesty in heaven. 4 So he became as much superior to the angels as the name he has inherited is superior to theirs.
Joy to the world! Luke 2, 10. God ushered in His Son for the joy of the world. But is the joy universal? How dark and cheerless so many hearts at Christmas! How foolish of proud man to be offended at the poverty and humility of the Son of God and to deprive himself through unbelief of the joy of greeting and worshiping the incarnate God! Yet we ourselves would flee in fear and guilt from the brightness of His glory and from the express image of His Person or despise in pride the Virgin Mary’s Son if this bringing in would be a judgment of the righteous God upon man. Faith sings: Christ, the Savior, is born. (G.H. Smukal)