The sign of a manger as identifying the birth of a king must have perplexed the shepherds, who would be very familiar with this vessel for feeding animals.  As if to allay such confusion, an additional multitude of angels join the angel of the Lord praising God.  They declare, “Glory to God in the highest, and on earth peace among those with whom he is pleased” (Luke 2:14).  This newborn son brings glory to God and peace to humanity, such is the significance of his arrival.