It is a light thing - “It is too little that Thou shouldest,” [Hengstenberg], that is, It is not enough honor to Thee to raise up Jacob and Israel, but I design for Thee more, namely, that Thou shouldest be the means of enlightening the Gentiles (Isa 42:6, Isa 42:7; Isa 60:3).
the preserved - namely, those remaining after the judgments of God on the nation - the elect remnant of Israel reserved for mercy. Lowth, with a slight but needless change of the Hebrew, translates for “tribes” and “preserved,” the “scions” - the “branches.”