“וְהָיָה בְּאַחֲרִית הַיָּמִים, נָכוֹן יִהְיֶה הַר בֵּית-יְהוָה בְּרֹאשׁ הֶהָרִים, וְנִשָּׂא, מִגְּבָעוֹת; וְנָהֲרוּ אֵלָיו, כָּל-הַגּוֹיִם”
“וְהָלְכוּ עַמִּים רַבִּים, וְאָמְרוּ לְכוּ וְנַעֲלֶה אֶל-הַר-יְהוָה אֶל-בֵּית אֱלֹהֵי יַעֲקֹב, וְיֹרֵנוּ מִדְּרָכָיו, וְנֵלְכָה בְּאֹרְחֹתָיו: כִּי מִצִּיּוֹן תֵּצֵא תוֹרָה, וּדְבַר-יְהוָה מִירוּשָׁלִָם”
“Now it will come about that In the final days (redemption) The mountain of the house of YHVH Will be established as the chief of the mountains, And will be raised above the hills; And all the nations will stream to it.”
“And many peoples will come and say, “Come, let us go up to the mountain of YHVH, To the house of the God of Jacob; That He may teach us concerning His ways And that we may walk in His paths.” For the law (Torah) will go forth from Zion And the word of YHVH from Jerusalem.”
In the Final Redemption, the idol worshippers will realized the weakness of their false faith. Those who adhere to the ways of YHVH will have spiritual ascention.
Many nations will seek to go up to the Holy Temple to study the new Torah coming from Zion in the Final Redemption. Zion is the level of Yessod of Malchut and the spiritual point above the Temple Mount in Jerusalem that connects Malchut to the upper levels and funnel the Light to this world.
In the Final Redemption that comes after the process of world cleansing by Mashiach, the Light will flow down to the world without limitation and all the righteous peopl from all teh nations will come to connect to the Light of the Shechina in the Holy Temple in Jerusalem.
All souls with faith in YHVH should purify their vesseles to avoid the process of cleansing by Mashiach and expand theri vessels to be able to receive the great light that will flow down to the world. Good people without impurities may survive the final cleansing process but the Light that they will enjoy will be little because their vessels is not big enough.
To expand our vessles we need to follow the ways of the Torah to clease our vessels and fill them with Light. Any act of kindness (Chessed) toward all people, sharing, tithing and Tzedakah creates vessels. The study of Zohar brings immediate Light to fill up our vessels giving it cleansing and expansion power.