ישעיהו, פרק מ״ד, פסוק כ״ג

All of creation, from the highest skies to the deepest parts of the earth, is called to break into a massive song of joy over the redemption of the Israelites and the revelation of God's glory in the world. The primary approach among commentators is that this call to the forces of nature is a metaphor for the universal happiness that will fill the world when the Israelites are finally freed from exile. This outpouring of emotion is captured through a progression of actions: a general feeling of joy and singing [ביאור שטיינזלץ], a loud shout of triumph [מצודת ציון], and the physical act of opening one's mouth to raise a mighty voice in song [רש״י, רד״ק, מצודת ציון].

A cosmic picture is painted, encompassing the entire universe. It stretches from the skies, which form the outer boundary of the world, all the way down to the depths, representing the deepest center of the earth [רד״ק, מצודת דוד]. Joining them are the inanimate parts of the world, such as the mountains, which make up the bulk of the earth, and the plant life, represented by the forest where trees gather [רד״ק, מצודת דוד]. Noticeably absent from this detailed list of nature are the animals. This omission reflects the reality that not all living beings will be happy at the time of redemption; the enemies of the Israelites, such as Babylon, will instead mourn their own defeat [רד״ק].

Beyond the poetic imagery, the participation of nature carries deep religious significance. The singing of the skies serves as public proof that God alone created and directs the stars, completely disproving the mistaken belief that the world is governed by astrology. At the same time, the song of the earth, mountains, and trees shows that God's supervision is not just general, but reaches into the finest details of creation, down to the level of plant life [מלבי״ם].

The driving force behind this worldwide celebration is that God has fulfilled His promise to redeem His people [מצודת דוד]. Through the miracles performed for the Israelites, God's glory will be revealed across the globe, leading all nations to praise Him [אבן עזרא, רד״ק, צאינה וראינה, מלבי״ם]. A different perspective connects the singing of nature to the power of repentance and the correction of past sins involving idol worship. Historically, the skies, the earth, the mountains, and the trees were common sites for idolatry, making them targets for ultimate destruction. However, because the Israelites will fully repent, these places will no longer stand as accusers against them. Spared from destruction, these very sites will endure and break into song, celebrating that God has saved the Israelites and elevated them to a position of honor and glory [אהבת יהונתן].