21 Sound the trumpet in Jerusalem ! Raise the alarm on my holy mountain! Let everyone tremble in fear because the day of the Lord is upon us. 2 It is a day of darkness and gloom, a day of thick clouds and deep blackness. Suddenly, like dawn spreading across the mountains, a great and mighty army appears. Nothing like it has been seen before or will ever be seen again. 3 Fire burns in front of them, and flames follow after them. Ahead of them the land lies as beautiful as the Garden of Eden. Behind them is nothing but desolation; not one thing escapes. 4 They look like horses; they charge forward like warhorses. 5 Look at them as they leap along the mountaintops. Listen to the noise they make-like the rumbling of chariots, like the roar of fire sweeping across a field of stubble, or like a mighty army moving into battle. 6 Fear grips all the people; every face grows pale with terror. 7 The attackers march like warriors and scale city walls like soldiers. Straight forward they march, never breaking rank. 8 They never jostle each other; each moves in exactly the right position. They break through defenses without missing a step. 9 They swarm over the city and run along its walls. They enter all the houses, climbing like thieves through the windows. 10 The earth quakes as they advance, and the heavens tremble. The sun and moon grow dark, and the stars no longer shine. 11 The Lord is at the head of the column. He leads them with a shout. This is his mighty army, and they follow his orders. The day of the Lord is an awesome, terrible thing. Who can possibly survive?
Matthew Henry's Commentary on Joel 2:1-11
Commentary on Joel 2:1-14
(Read Joel 2:1-14)
The priests were to alarm the people with the near approach of the Divine judgments. It is the work of ministers to warn of the fatal consequences of sin, and to reveal the wrath from heaven against the ungodliness and unrighteousness of men. The striking description which follows, shows what would attend the devastations of locusts, but may also describe the effects from the ravaging of the land by the Chaldeans. If the alarm of temporal judgments is given to offending nations, how much more should sinners be warned to seek deliverance from the wrath to come! Our business therefore on earth must especially be, to secure an interest in our Lord Jesus Christ; and we should seek to be weaned from objects which will soon be torn from all who now make idols of them. There must be outward expressions of sorrow and shame, fasting, weeping, and mourning; tears for trouble must be turned into tears for the sin that caused it. But rending the garments would be vain, except their hearts were rent by abasement and self-abhorrence; by sorrow for their sins, and separation from them. There is no question but that if we truly repent of our sins, God will forgive them; but whether he will remove affliction is not promised, yet the probability of it should encourage us to repent.