And the shepherds returned, glorifying and praising God for all the things that they had heard and seen, as it was told unto them.

Wesley's Notes

2:20 For all the things that they had heard - From Mary; as it was told them - By the angels.

Jamieson-Fausset-Brown Bible Commentary

20. glorifying and praising God, &c.-The latter word, used of the song of the angels (Lu 2:13), and in Lu 19:37, and Lu 24:53, leads us to suppose that theirs was a song too, probably some canticle from the Psalter-meet vehicle for the swelling emotions of their simple hearts at what "they had heard and seen."

Matthew Henry's Concise Commentary

2:8-20 Angels were heralds of the new-born Saviour, but they were only sent to some poor, humble, pious, industrious shepherds, who were in the business of their calling, keeping watch over their flock. We are not out of the way of Divine visits, when we are employed in an honest calling, and abide with God in it. Let God have the honour of this work; Glory to God in the highest. God's good-will to men, manifested in sending the Messiah, redounds to his praise. Other works of God are for his glory, but the redemption of the world is for his glory in the highest. God's goodwill in sending the Messiah, brought peace into this lower world. Peace is here put for all that good which flows to us from Christ's taking our nature upon him. This is a faithful saying, attested by an innumerable company of angels, and well worthy of all acceptation, That the good-will of God toward men, is glory to God in the highest, and peace on the earth. The shepherds lost no time, but came with haste to the place. They were satisfied, and made known abroad concerning this child, that he was the Saviour, even Christ the Lord. Mary carefully observed and thought upon all these things, which were so suited to enliven her holy affections. We should be more delivered from errors in judgment and practice, did we more fully ponder these things in our hearts. It is still proclaimed in our ears that to us is born a Saviour, Christ the Lord. These should be glad tidings to all.