פִּצְח֤וּ רַנְּנוּ֙ יַחְדָּ֔ו חָרְב֖וֹת יְרוּשָׁלִָ֑ם כִּֽי־נִחַ֤ם יְהוָה֙ עַמּ֔וֹ גָּאַ֖ל יְרוּשָׁלִָֽם׃
Break forth into joy, sing together, Ye waste places of Jerusalem; For the LORD hath comforted His people, He hath redeemed Jerusalem.
Ibn Ezra on Isaiah
פצחו Break forth. A poetical expression for speak. The word has the same meaning in Arabic.10Comp. I. E. on 14:7.