And Joseph also went up from Galilee, out of the city of Nazareth, 
intoJudaea, unto the city of David, which is called Bethlehem; 
because he was of the house and lineage of David
To be taxed with Mary his espoused wife, being great with child.
And so it was, that, while they were there, 
the days were accomplished that she should be delivered.
And she brought forth her firstborn son, 
and wrapped him in swaddling clothes, and laid him in a manger; 
because there was no room for them in the inn.
And there were in the same country shepherds abiding in the field, 
keeping watch over their flock by night.
And, lo, the angel of the Lord came upon them, 
and the glory of the Lord shone round about them: and they were sore afraid.
And the angel said unto them, 
Fear not: for, behold, I bring you good tidings of great joy, which shall be to all people.
For unto you is born this day in the city of David a Saviour, which is Christ the Lord.

It is uncertain exactly when Jesus was born and the truth of all the details of the circumstances in this scripture quote (King James Bible), but there is little doubt that he was born and has had an enormous effect on the world for over 2000 years.