In those days a decree went out from Caesar Augustus that the whole world should be enrolled. This was the first enrollment, when Quirinius was governor of Syria. So all went to be enrolled, each to his own town. And Joseph too went up from Galilee from the town of Nazareth to Judea, to the city of David that is called Bethlehem, because he was of the house and family of David, to be enrolled with Mary, his betrothed, who was with child. While they were there, the time came for her to have her child, and she gave birth to her firstborn son. She wrapped him in swaddling clothes and laid him in a manger, because there was no room for them in the inn.Jesus is not one of many, one of several, He is one of a kind: true God and true man. Prior to His Incarnation the gulf between God and man, due to the fall, was infinite. Prior to His Incarnation, God was not a man. This is the Mystery, the amazing thing about what happened then. God has only One Begotten Son, only One, Jesus.
The Nativity, by Jacob Jordaens, ca. 1653
Now there were shepherds in that region living in the fields and keeping the night watch over their flock. The angel of the Lord appeared to them and the glory of the Lord shone around them, and they were struck with great fear. The angel said to them, “Do not be afraid; for behold, I proclaim to you good news of great joy that will be for all the people. For today in the city of David a savior has been born for you who is Messiah and Lord. And this will be a sign for you: you will find an infant wrapped in swaddling clothes and lying in a manger.” And suddenly there was a multitude of the heavenly host with the angel, praising God and saying: “Glory to God in the highest and on earth peace to those on whom his favor rests" (Luke 2:1-14)
On a holy night, a silent night, in the little, out-of-the-way, dusty Jewish village of Bethlehem long ago something happened, the likes of which never happened before and will never happen again.