Holy Zohar text. Daily Zohar -380.

Tikkun 21 – 121

Genesis 6:19 “וּמִכָּל-הָחַי מִכָּל-בָּשָׂר שְׁנַיִם מִכֹּל, תָּבִיא אֶל-הַתֵּבָה–לְהַחֲיֹת אִתָּךְ”
“And of every living thing of all flesh, two of every sort shall you bring into the ark, to keep them alive with you”

Like the way YHVH ordered Noah who came to the Ark, when Mashiach comes the people that are connected will be included in the safety of ‘Noah’s Ark’.

Jeremiah 3:14 “וְלָקַחְתִּי אֶתְכֶם אֶחָד מֵעִיר, וּשְׁנַיִם מִמִּשְׁפָּחָה, וְהֵבֵאתִי אֶתְכֶם, צִיּוֹן.”
“And I will take you one of a city, and two of a family, and I will bring you to Zion”

This verse tells us that there will be a selection of those who will merit to see the light of the return to Zion.
Zion is the Yessod of Malchut and is the connection of the Light to Jerusalem. The true definition of Zionism is the desire to see the light again in Jerusalem. As it was in the days the Holy Temple stood in Jerusalem.

When the light comes to Zion only few (relatively) will merit to see the glory of the Revelation. Following this event, the rest and worthy people will be resurrected.