ישעיהו נג:ח פירוש: רש״י ואבן עזרא

From imprisonment and from judgment he is taken The prophet reports and says that the heathens (nations [mss., K’li Paz]) will say this at the end of days, when they see that he was taken from the imprisonment that he was imprisoned in their hands and from the judgment of torments that he suffered until now.

He was taken, etc. God redeemed Israel; namely, those of them that were righteous.

and his generation The years that passed over him.