Albert Barnes on Luke 2:16

Unto Bethlehem. The city of David, where the angel had told them they would find the Saviour. These shepherds appear to have been pious men. They were waiting for the coming of the Messiah. On the first intimation that he had actually appeared they went with haste to find him. So all men should without delay seek the Saviour. When told of him by the servants of God, they should, like these shepherds, forsake all, and give no rest to their eyes until they have found him. We may always find him. We need not travel to Bethlehem. We have only to cast our eyes to heaven; to look to him and to believe on him, and we shall find him ever near to us, and for ever our Saviour and friend.