[An angel of the Lord said,] "Today in the town of David a Savior has been born to you; he is Christ the Lord. This will be a sign to you: You will find a baby wrapped in cloths and lying in a manger." Suddenly a great company of the 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 2:11-14, New International Version)
The sign to the shepherds was a baby in a feed trough. Pretty potent sign isn't it! The Almighty Creator of the universe sleeping where the sheep and goats have eaten their grain and hay. That God would love us so much as to reduce himself to such an inauspicious beginning reminds us why the angels praise him so. He is glorious and yet he chose not to hide or protect that glory, but instead he shared it so we could find it, too!