וּכְב֤וֹד יַעְרוֹ֙ וְכַרְמִלּ֔וֹ מִנֶּ֥פֶשׁ וְעַד־בָּשָׂ֖ר יְכַלֶּ֑ה וְהָיָ֖ה כִּמְסֹ֥ס נֹסֵֽס׃
And the glory of his forest and of his fruitful field, He will consume both soul and body; And it shall be as when a sick man wasteth away.
Rashi on Isaiah
And the glory of his forest and his stately forest They are his numerous armies.
Ibn Ezra on Isaiah
And the glory of his forest and of his fruitful field. A figure, signifying that his armies would be as numerous as the trees of the forest, and as the ears of a fruitful field.