They break forth into singing... — The phrase is noticeable as characteristic of Isaiah (Isaiah 44:23; Isaiah 49:13; Isaiah 52:9; Isaiah 54:1; Isaiah 55:12), and is not found elsewhere. The emancipated nations are represented as exulting in the unfamiliar peace that follows on the downfall of their oppressor.
Related Commentaries of Isaiah 14:7
Isaiah 14:7
7 The whole earth is at rest, and is quiet: they break forth into singing.