מַה-נָּאווּ עַל-הֶהָרִים רַגְלֵי מְבַשֵּׂר, מַשְׁמִיעַ שָׁלוֹם מְבַשֵּׂר טוֹב--מַשְׁמִיעַ יְשׁוּעָה; אֹמֵר לְצִיּוֹן, מָלַךְ אֱלֹהָיִךְ
Here, רַגְלֵי מְבַשֵּׂר can refer to two Meschichin, but the subject of מַשְׁמִיעַ יְשׁוּעָה is singular. This is Moshiach ben Yosef. (Kol Hator 2, 61)קוֹל צֹפַיִךְ נָשְׂאוּ קוֹל, יַחְדָּו יְרַנֵּנוּ: כִּי עַיִן בְּעַיִן יִרְאוּ, בְּשׁוּב יְהוָה צִיּוֹן
This refers to Kibbutz Galuyot. (Kol Hator 5, part 2)פִּצְחוּ רַנְּנוּ יַחְדָּו, חָרְבוֹת יְרוּשָׁלִָם
This refers to Binyan Yerushalayim and the removal of Ruach Hatum'ah. (Kol Hator 5, part 2)כִּי-נִחַם יְהוָה עַמּוֹ, גָּאַל יְרוּשָׁלִָם
This refers to redemption of the Truth, as Yerushalayim he is called the city of Truth. This is all the task of Moshiach ben Yosef. (Kol Hator 5, part 2)חָשַׂף יְהוָה אֶת-זְרוֹעַ קָדְשׁוֹ, לְעֵינֵי כָּל-הַגּוֹיִם וְרָאוּ, כָּל-אַפְסֵי-אָרֶץ, אֵת, יְשׁוּעַת אֱלֹהֵינוּ
This is Kiddush Hashem, a hint at the victory of Yisrael in the war of Gog and Magog, by Moshiach ben Yosef. (Kol Hator 5, part 2)הִנֵּה יַשְׂכִּיל, עַבְדִּי; יָרוּם וְנִשָּׂא וְגָבַהּ, מְאֹד
Moshiach ben Yosef is to be wise. He will be bigger than Avraham, bigger than Moshe, higher than the ministering angels (Midrash Tanchuma Toldot, 14), because he solves the problem of the sin of Kain, the hatred of the other, the infancy of man. Because man, in his infancy, thinks that it is an insult that the other even exists.This is a proper introduction of chapter 53, where Moshiach is the suffering Moshiach, and of chapter 54, where, in our perush, is the great victory in the war against Gog.
