Sing, O ye heavens; for the LORD hath done it… – Isaiah 44:23

Brethren, the very center and emphasis of the song seems to me to lie in this: “The Lord hath done it.” How my heart delights in those five words, “The Lord hath done it!” Look at them for a minute. Whatever God does is the subject of joy to all pure beings. God in action is the delight of an intelligent universe. When God created the world, the morning stars sang together, and all the sons of God shouted for joy. I can well conceive that they kept a more than ordinarily joyous festival on that Seventh Day, when the Lord “rested and was refreshed.” Wondrous expression! If we were perfect, everything that God did would cause us to sing, and as He is always acting, we should be always singing. If salvation were the work of man, our scantiest notes might suffice, for what is man but a worm, a creature that is crushed before the moth? Wherein is he to be accounted of? But when we sing of redemption it is the Lord’s redemption. He planned it from the beginning; He carried it out in the person of His Son; He applies it by His Holy Spirit. Salvation is of the Lord. “The Lord hath done it.” You who choose may invent a salvation that is partly by man and partly by God, and you may cry this up much as you please; as for me, I have no desire for any salvation but that which is all of God, neither is there any other. This one note shall occupy my entire being-“The Lord hath done it:” “The Lord hath done it.” Every new convert who has newly found peace knows that the Lord has done it; every man who has been for years a believer, and has learned his own weakness, will say clearly, “The Lord hath done it;” ay, and the aged Christian just about to depart is the man to say, “The Lord hath done it.” Grace reigns without a rival, the Lord alone is exalted. Sing, O heavens, and be joyful O earth, for redemption is Jehovah’s work. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/1240.cfm