נָ֥חָה שָׁקְטָ֖ה כָּל־הָאָ֑רֶץ פָּצְח֖וּ רִנָּֽה׃
Ang buong daigdig ay nagpapahinga at tahimik; sila'y biglang umaawit nang may galak.
Rashi
opened [their mouth] in song This is the song they recited, “All the land rested, became tranquil.”
Ibn Ezra
Is at rest, since the death of the King of Babylon.
Ibn Ezra
פצחו They break forth. The root פצח in Arabic means to speak poetically.