דָּבָ֛ר שָׁלַ֥ח אֲדֹנָ֖י בְּיַעֲקֹ֑ב וְנָפַ֖ל בְּיִשְׂרָאֵֽל׃
Ein Wort entsendet der Herr gen Jakob, und es kommt herab auf Israel,
Rashi on Isaiah
The Lord has sent a word against Jacob [i.e.,] the prophecy that he prophesied concerning the punishment of Pekah son of Remaliah.
Ibn Ezra on Isaiah
A word. A prophecy or Divine decree.13גזרה is, according to I. E., the divine decree, as it commences already to operate; the first natural causes of the events to which the decree refers.
Rashi on Isaiah
and it has fallen in Israel From now, it will be fulfilled concerning them.