Luke 2:8-16 (NIV);
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 said to them, "Do not be afraid. I bring you good news of great joy that will be for all the people. Today in the town of David a Saviour 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." When the angels had left them and gone into heaven, the shepherds said to one another, "Let's go to Bethlehem and see this thing that has happened, which the Lord has told us about." So they hurried off and found Mary and Joseph, and the baby, who was lying in the manger.
According to Luke's account, the first to hear the news of Jesus' birth are the shepherds keeping an eye on their sheep overnight — those unlucky souls who spend their nights in the cold, and when they come into town to see the baby they bring their dirt and their sheep-smell with them.
That line, "when the angels had left them and gone into heaven" — I wonder how long the shepherds stood there, watching and listening, amazed by what they were witnessing?