Adam Clarke on Isaiah 42:4

He shall not fail nor be discouraged "His force shall not be abated nor broken" - Rabbi Meir ita citat locum istum, ut post ירוץ yaruts, addat כוחו cocho, robur ejus, quod hodie Ilon comparet in textu Hebraeo, sed addendum videtur, ut sensus fiat planior. "Rabbi Meir cites this passage so as to add after ירוץ yarats כוחו cocho, his force, which word is not found in the present Hebrew text, but seems necessary to be added to make the sense more distinct." Capell. Crit. Sac. p. 382. For which reason I had added it in the translation, before I observed this remark of Capellus. - L.