1)
What Tzedek and honor will they see?
1.
Radak: The Tzedek that Kel will do with you; "your honor" addresses Yerushalayim.
2.
Malbim: Refer to 62:1:3:1. Even idolaters will recognize your virtue, and the truth of your Emunah and Torah, and all the more so kings, who are wiser, will. Kings will recognize that your honor is greater than theirs, and all the more so Goyim (commoners) will.
2)
What will be the new name?
1.
Radak: "Cheftzi Vah" (4) [Malbim - and "Derushah" (12).
3)
What is the meaning of "Yikavenu"?
1.
Rashi: He will specify it. Radak - this is like "Asher Nikevu b'Shemos" (Bamidbar 1:17).
2.
Malbim: He will explain the name and reveal its reason - "Cheftzi Vah