וְהָיָה אַחֲרֵי־כֵן אֶשְׁפּוֹךְ אֶת־רוּחִי עַל־כָּל־בָּשָׂר וְנִבְּאוּ בְּנֵיכֶם וּבְנֹתֵיכֶם זִקְנֵיכֶם חֲלֹמוֹת יַחֲלֹמוּן בַּחוּרֵיכֶם חֶזְיֹנוֹת יִרְאוּ

Thereafter it will be, when everything returns to its proper state, that I will pour My spirit upon all flesh. I will reveal My glory to all, and I will bestow divine inspiration upon them. And your sons and your daughters will prophesy; your elders will dream prophetic dreams, despite the fact that elderly people are usually settled in their minds and ways, and your young men will see visions.

וְגַם עַל־הָעֲבָדִים וְעַל־הַשְּׁפָחוֹת בַּיָּמִים הָהֵמָּה אֶשְׁפּוֹךְ אֶת־רוּחִי

I will pour My spirit also upon the slaves and upon the maidservants in those days. The world will be full of prophets.

וְנָתַתִּי מוֹפְתִים בַּשָּׁמַיִם וּבָאָרֶץ דָּם וָאֵשׁ וְתִימְרוֹת עָשָׁן

In preparation for the day of God, I will set wonders in the heavens and on the earth: blood, fire, and pillars of smoke.

הַשֶּׁמֶשׁ יֵהָפֵךְ לְחֹשֶׁךְ וְהַיָּרֵחַ לְדָם לִפְנֵי בּוֹא יוֹם ה' הַגָּדוֹל וְהַנּוֹרָא

The sun will be transformed into darkness, so that it will not be visible, and the color of the moon will turn into that of blood. On rare occasions, atmospheric conditions on Earth cause the moon to appear red. All of this will occur before the advent of the great and terrible day of the Lord.

וְהָיָה כֹּל אֲשֶׁר־יִקְרָא בְּשֵׁם ה'יִמָּלֵט כִּי בְּהַר־צִיּוֹן וּבִירוּשָׁלִַם תִּהְיֶה פְלֵיטָה כַּאֲשֶׁר אָמַר ה' ובַשְּׂרִידִים אֲשֶׁר ה' קֹרֵא

It shall be that anyone who proclaims the name of the Lord will escape, as on Mount Zion and in Jerusalem there will be a refuge, as the Lord said, and this salvation will be among the remnant, the few whom the Lord calls.