Sing for joy, O heavens, for the LORD has done this; shout aloud, O depths of the earth. Break forth in song, O mountains, you forests and all your trees. For the LORD has redeemed Jacob, and revealed His glory in Israel.
23. Praise, O ye heavens. He now exhorts the Jews to render thanksgiving, not only that they may testify their gratitude, but that their own expectation of deliverance may be strengthened; and, therefore, he enjoins believers to look upon it as an event already accomplished, as if the Lord had already delivered them.
In these verses we have, I. The duty which Jacob and Israel, now in captivity, were called to, that they might be qualified and prepared for the deliverance designed them. Our first care must be to get good by our afflictions, and then we may hope to get out of them.
Commenting on Isaiah 44:21-28
Sing, O ye heavens, for the Lord hath done it,.... Done what he promised, the forgiveness of the sins of his people, and the redemption of them. So the Targum, "because the Lord hath wrought redemption for his people.'' The Vulgate Latin version adds, "mercy" (o); and so the Septuagint version, "because God hath had mercy on Israel" (p); and therefore the heavens are called...