31 And after that, it will come about, says the Lord, that I will send my spirit on all flesh; and your sons and your daughters will be prophets, your old men will have dreams, your young men will see visions: 2 And on the servants and the servant-girls in those days I will send my spirit. 3 And I will let wonders be seen in the heavens and on the earth, blood and fire and pillars of smoke. 4 The sun will be made dark and the moon turned to blood, before the great day of the Lord comes, a day to be feared. 5 And it will be that whoever makes his prayer to the name of the Lord will be kept safe: for in Mount Zion and in Jerusalem some will be kept safe, as the Lord has said, and will be among the small band marked out by the Lord.
Matthew Henry's Commentary on Joel 3:1-5
Commentary on Joel 3:1-8
(Read Joel 3:1-8)
The restoration of the Jews, and the final victory of true religion over all opposers, appear to be here foretold. The contempt and scorn with which the Jews have often been treated as a people, and the little value set upon them, are noticed. None ever hardened his heart against God or his church, and prospered long.