Book of Joel Chapter 2 Vs. 30

The Lord Will Pour Out His Spirit 

And I will shew wonders in the heavens and in the earth, blood, and fire, and pillars of smoke. Joel 2:30

And I will... Each revelation of God prepares the way for another, until that last revelation of His love and of His wrath in the Great Day.

In delivering His people from Egypt, "the Lord showed signs and wonders, great and sore, upon Egypt (Deut. 6:22). Here, in allusion to it, He says, in the same words, of the new revelation, "I will show," or "give, wonders, or wondrous signs," (as the word includes both). Wonders beyond the course and order of nature, and portending other dispensations of God, of joy to His faithful, and terror to His enemies.

As when Israel came out of Egypt, "the pillar of the cloud was a cloud and darkness to the camp of the Egyptians," but "gave light by night" to the "camp of Israel" (Exo. 14:19-20). So all God's workings are light and darkness at once, according as people are, who see them or to whom they come.

These wonders in heaven and earth "began in" the First Coming and "Passion of Christ, grew in the destruction of Jerusalem, but shall be perfectly fulfilled toward the end of the world, before the final Judgment, and the destruction of the Universe."

At the birth of Christ, there was "the star" which appeared unto the wise men, "and the multitude of the heavenly host," whom the shepherds saw. At His Atoning Death, "the sun was darkened," there was the three hours' darkness over the whole land.

On earth "the veil of the temple was rent in twain from the top to the bottom, and the earth did quake, and the rocks rent, and the graves were opened" (Luke 23:44-45; Mat. 27:45; 27:51-52).

And the Blood and water issued from the Savior’s side. After His Resurrection, there was the vision of Angels, terrible to the soldiers who watched the sepulcher, comforting to the women who sought to honor Jesus.

His Resurrection was a sign on earth, His Ascension in earth and heaven. But our Lord speaks of signs both in earth and heaven, as well before the destruction of Jerusalem, as before His Second Coming.

Mat. 24:7 "For nation shall rise against nation, and kingdom against kingdom: and there shall be famines, and pestilences, and earthquakes, in divers places."

Mat. 24:29 “Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken:"

The great and dreadful day of the Lord will be preceded by ominous signs (wonders) of impending judgment (cf. Joel 2:10; see also Eze. 32:6-8 for literary parallels). Blood and fire and billows of smoke suggest the effects of warfare. The turning of the moon to blood refers in a poetic way to its being darkened (cf. the parallel line, The sun will be turned to darkness, and Joel 2:10; 3:15). Though such phenomena will signal doom for God’s enemies, His people should interpret them as the precursors of their deliverance (cf. Mat. 24:29-31; Mark 13:24-27; Luke 21:25-28).

The great and dreadful day of the Lord will be preceded by ominous signs (wonders) of impending judgment (cf. Joel 2:10; see also Eze. 32:6-8 for literary parallels).