Uncontainable Joy

Fear not, for behold, I bring you good news of GREAT JOY, that will be for all people. For unto you is born this day in the city of David a Savior, who is Christ the LORD. 
Luke 2v 10 - 11

The shepherd 's response to this incredible news;
After seeing Him, the shepherds told everyone what had happened and what the angel had said to them about this child. 
( Luke 2v17)

The shepherd's went back to their flocks, glorifying and praising God for all they had heard and seen. 
( Luke 2 v 20)

Their excitement, awe and wonder was something they  couldn't keep to themselves, this great joy was expressed in them through praise and worship.