Of the minor Prophets, Joel is judged to be the earliest in connection with Judah, though there are no dates given in the prophecy itself. The key-note of the prophecy is “the day of Jehovah,” which is five times mentioned in connection with the future judgments, which will bring in the full blessing of Israel and the earth, when the Lord also will have His portion, a meat offering, and a drink offering for Himself.
Joel 1. The prophet takes occasion by the devastation wrought in his day by an army of insects to call the priests, the princes, and the people to a fast, and a solemn assembly in the house of the Lord, there to cry unto Jehovah. Then he adds, “Alas for the day! for the day of the Lord is at hand, and as a destruction from the Almighty shall it come.” Here it is destruction, open judgment, as in the day when God will judge the world in righteousness. The army of insects was but a precursor, but as a present thing, instead of joy and gladness being in the house of God, God was judging. The prophet said “is at hand”; but God’s longsuffering deferred its full execution, and defers it still.
Joel 2. The day of Jehovah is nigh at hand, and the trumpet is to sound an alarm of war (compare Num. 10:99And if ye go to war in your land against the enemy that oppresseth you, then ye shall blow an alarm with the trumpets; and ye shall be remembered before the Lord your God, and ye shall be saved from your enemies. (Numbers 10:9)). The army of insects is still alluded to, but it looks forward to the future, when God will bring His judgments upon the land. The army is His, and the camp is His: the day of Jehovah is great and very terrible. The people are called to repentance, to rend their hearts and not their garments, for God is merciful and gracious. The trumpet was to be blown in Zion for a solemn assembly (compare Num. 10:77But when the congregation is to be gathered together, ye shall blow, but ye shall not sound an alarm. (Numbers 10:7)). Priests and all are called to weep and pray. God will hear, and will destroy their enemies, especially the northern army (Joel 2:2020But I will remove far off from you the northern army, and will drive him into a land barren and desolate, with his face toward the east sea, and his hinder part toward the utmost sea, and his stink shall come up, and his ill savor shall come up, because he hath done great things. (Joel 2:20), elsewhere alluded to as Assyria), and He will bring His people into great blessing. When they repent, the Holy Spirit will be poured out upon them and upon all flesh. This was quoted by Peter in Acts 2:16-2116But this is that which was spoken by the prophet Joel; 17And it shall come to pass in the last days, saith God, I will pour out of my Spirit upon all flesh: and your sons and your daughters shall prophesy, and your young men shall see visions, and your old men shall dream dreams: 18And on my servants and on my handmaidens I will pour out in those days of my Spirit; and they shall prophesy: 19And I will show wonders in heaven above, and signs in the earth beneath; blood, and fire, and vapor of smoke: 20The sun shall be turned into darkness, and the moon into blood, before that great and notable day of the Lord come: 21And it shall come to pass, that whosoever shall call on the name of the Lord shall be saved. (Acts 2:16‑21), but the nation did not then repent, it was only a remnant that turned to the Lord and entered into the blessing that God was bestowing—not outward and visible benefits as it will be in the future. There will also be signs in the heavens and in the earth before the great and terrible day of the Lord. There were some such omens, according to the historians, before the destruction of Jerusalem, so this passage, quoted in Acts 2, may have had a partial fulfillment then, though it remains to be fully verified in a future day.
Joel 3. This enters into the details of the last days as far as Judah and Jerusalem are concerned, the restoration of the ten tribes not being the subject here. The nations have oppressed God’s people in many ways, and sold them as slaves. God will requite this on their own heads. They are called to arm themselves, to bring all their mighty men, and to come unto the valley of Jehoshaphat, which is the valley of judgment, and there God will deal with them. In the valley of decision (or threshing) they will be cut to pieces. The enemies of God and of Judah being destroyed, there will be great blessing for His people, whom He had chastened in His love; but, cleansed and restored, He will dwell among them.