Jamieson, Fausset and Brown on Isaiah 59:9

9. judgment far--retribution in kind because they had shown "no judgment in their goings" (Is 59:8). "The vindication of our just rights by God is withheld by Him from us."

us--In Is 59:8 and previous verses, it was "they," the third person; here, "us ... we," the first person. The nation here speaks: God thus making them out of their own mouth condemn themselves; just as He by His prophet had condemned them before. Isaiah includes himself with his people and speaks in their name.

justice--God's justice bringing salvation (Is 46:13).

light--the dawn of returning prosperity.

obscurity--adversity (Jr 8:15).