אֶת־עַ֥ם נוֹעָ֖ז לֹ֣א תִרְאֶ֑ה עַ֣ם עִמְקֵ֤י שָׂפָה֙ מִשְּׁמ֔וֹעַ נִלְעַ֥ג לָשׁ֖וֹן אֵ֥ין בִּינָֽה׃
No verás á aquel pueblo espantable, pueblo de lengua oscura de entender, de lengua tartamuda que no comprendas.
Rashi on Isaiah
A people of a strange tongue (נוֹעָז) like לוֹעֵז. These are all the heathens, whose language is not the holy tongue. ([Other editions read:] These are Assyria and Babylon, whose language is not the holy tongue.) ([Manuscripts read:] These are all the nations whose language is not the holy tongue.)
Ibn Ezra on Isaiah
נועז We cannot say, whether the נ is radical, or the characteristic prefix of the Niphal; the word is hap. leg.; it means a stranger or a strange man; to consider לועז═נועז speaking a foreign language, is incorrect.
Rashi on Isaiah
you shall not see You shall not esteem in your heart, for they shall all be dark and humble.