לֵאמֹ֤ר לַֽאֲסוּרִים֙ צֵ֔אוּ לַאֲשֶׁ֥ר בַּחֹ֖שֶׁךְ הִגָּל֑וּ עַל־דְּרָכִ֣ים יִרְע֔וּ וּבְכָל־שְׁפָיִ֖ים מַרְעִיתָֽם׃
Saying to the prisoners: ‘Go forth’; To them that are in darkness: ‘Show yourselves’; They shall feed in the ways, And in all high hills shall be their pasture;
Rashi on Isaiah
To say to the prisoners, “Go out!” At the time I will say to the prisoners of the exile, “Go out!”
Ibn Ezra on Isaiah
That thou mayest say, etc. This shows that the prophet announced this to the Jews before they returned from the Babylonian exile.