וּשְׁאָ֧ר מִסְפַּר־קֶ֛שֶׁת גִּבּוֹרֵ֥י בְנֵֽי־קֵדָ֖ר יִמְעָ֑טוּ כִּ֛י יְהוָ֥ה אֱלֹהֵֽי־יִשְׂרָאֵ֖ל דִּבֵּֽר׃ (ס)
e il residuo del numero degli arcieri, i potenti uomini dei figli di Kedar, sarà ridotto; poiché l'Eterno, il Dio d'Israele, l'ha detto.'
Ibn Ezra on Isaiah
And the residue, etc. This expression indicates that the greater part will perish.
Rashi on Isaiah
the bows of the heroes of the children of Kedar Archers, for they are like their forefather, (Ishmael,) about whom it is stated (Gen. 21:2): “And he was an archer.”