לֹֽא־יִקָּרֵ֥א ע֛וֹד לְנָבָ֖ל נָדִ֑יב וּלְכִילַ֕י לֹ֥א יֵֽאָמֵ֖ר שֽׁוֹעַ׃
Ibn Ezra on Isaiah
נבל The vile person. Comp. נובלת fading7The oak is said to be fading, on account of its losing its foliage and remaining without fruit and leafless; so נבל the vile person, is without good actions, yielding no benefit to his fellow-men. (1:30).
Rashi on Isaiah
noble (שׁוּעַ) an expression of a lord, to whom everyone turns (שׁוֹעִין).