"And there were shepherds living out in the fields nearby, keeping watch over their flocks at night. An angel of the Lord appeared to them, and the glory of the Lord shone around them, and they were terrified. But the angel of the Lord said to them, "Do not be afraid. I bring good news of great joy that will be for all people. Today in the city of David a Savior has been born to you: You will find a baby wrapped in cloths and lying in a manger." Suddenly a great company of heavenly host appeared with the angel, praising God and saying, "Glory to God in the highest, and on earth peace to men on whom his favor rests."
Luke 2:8-14 from the New International Version of the Bible
Jesus is the TRUE reason for the season of Christmas. Christ-mas not Santa-mas remember that Jesus was called the Christ and therefore Christ-mas celebrates his birth.