Isaiah 49:13

Isaiah 49:13. Sing, O heavens; and be joyful, O earth; and break forth into singing, O mountains: for the Lord hath comforted his people, and will have mercy upon his afflicted.

How? Why, by the very coming of Christ, by his birth at Bethlehem, and all the blessings which come with the Incarnate God, his afflicted ones are consoled, and all his people are divinely comforted. Shall we not, then, rejoice in Christ, who is himself so full of joy that he teaches the very heavens to sing, and the mountains to break forth into praise?