Why does it say "Karov Tzidki"?
Radak: If Bnei Galus will heed Me, My Tzedek will come soon.
Malbim: Until now, people saw serenity of Resha'im and afflictions of Tzadikim, and complained about Hashem's conduct - why does He not pay reward and punishment?! Soon will come the time when My virtue in this will be revealed.
Why does it say "Yatza Yish'i"?
Radak: It is as if it left - "Ki Kerovah Yeshu'asi Lavo" (56:1).
Malbim: My salvation [for Tzadikim] will go out from potential to actuality.
What is the meaning of "Yishpotu"?
Rashi: He will chastise.
When will "u'Zero'ai Amim Yishpotu" be fulfilled?
Radak: This refers to the war of Gog and Magog. It says Zero'ai (plural) due to the great vengeance that He will take on them, like one who hits with both hands.
What is the meaning of "v'El Zero'i Yeyachelun"?
Radak: I will support them with My right hand.
Why does it say "Yekavu" and "Yeyachelun"?
Malbim: Tikvah is even without a promise, and without a time limit. Tocheles is waiting until a certain time promised to him, or he knows that it will come. Hashem did not promise to save the island residents, but via the Nevi'im He promised to punish Resha'im - "Vo Yom Hashem ha'Gadol veha'Nora" (Mal'achi 3:23)