יְהוָה֙ כַּגִּבּ֣וֹר יֵצֵ֔א כְּאִ֥ישׁ מִלְחָמ֖וֹת יָעִ֣יר קִנְאָ֑ה יָרִ֙יעַ֙ אַף־יַצְרִ֔יחַ עַל־אֹיְבָ֖יו יִתְגַּבָּֽר׃ (ס)
The LORD will go forth as a mighty man, He will stir up jealousy like a man of war; He will cry, yea, He will shout aloud, He will prove Himself mighty against His enemies.
Ibn Ezra on Isaiah
The Lord shall go forth, that is, the divine decrees, that were secret hitherto, shall now be revealed.
Ibn Ezra on Isaiah
Jealousy because of the Babylonians, that worship Bel.