Isaiah 51:4

"Attend unto me, O my people; and give ear unto me, O my nation: for a law shall go forth from me, and I will establish my justice for a light of the peoples. My righteousness is near, my salvation is gone forth, and mine arms shall judge the peoples; the isles shall wait for me, and on my arm shall they trust. Lift up your eyes to the heavens, and look upon the earth beneath; for the heavens shall vanish away like smoke, and the earth shall wax old like a garment; and they that dwell therein shall die in like manner: but my salvation shall be forever, and my righteousness shall not be abolished. Hearken unto me, ye that know righteousness, the people in whose heart is my law; fear ye not the reproach of men, neither be ye dismayed at their revilings. For the moth shall eat them up like a garment, and the worm shall eat them like wool; but my righteousness shall be forever, and my salvation unto all generations."

"This second strophe describes God's salvation as comprehending all mankind and as outlasting the heavens and the earth."[8] This analysis is certainly true, and therefore, we must question the use of the word "nation" here instead of "nations," the latter word meaning "Gentiles," and the former leaving the impression that the old fleshly nation of the Jews were God's chosen people. That was never the case. The chosen were then, and always, the persons of like faith and character of Abraham. Both Lowth and Adam Clarke who quoted him correctly rendered the word here "O my peoples." adding that, "The address here is not to Jews but to Gentiles."[9]

Two additional meanings of "righteousness" appear in Isaiah 51:4,5; it means "justice" in Isaiah 51:4, and "salvation" in Isaiah 51:5. "It means here the faithful completion of God's promise to deliver his people."[10] See also Footnote No. 6.

"Isaiah 51:6 here affirms that the heavens and the earth are less stable than God's Word; and Isaiah 51:7 goes on to urge the exiles to trust God's promises, putting aside any fear of men who, after all, are far more transient than the material universe."[11] There are reflections of this passage (and of all of Isaiah) throughout the New Testament, especially in Hebrews 1:11.

"It is a justifiable conclusion from this paragraph that: Since all Christ-rejecting unbelievers are doomed to utter destruction, no believer should ever quail before the menace of the world or the hostility of ungodly men, whose plight is desperate, and their doom sure."[12]