E.W. Bullinger's Companion Bible Notes - Joel 2:10
the sun and the moon shall be dark. Another proof of what is signified; and that this prophecy concerns what is future. Compare Joel 3:15 . See Matthew 24:29 . Compare Isaiah 13:10 . Ezekiel 32:7 , Ezekiel 32:8 . Acts 2:20 . Revelation 6:12 . read more
Bridgeway Bible Commentary - Joel 2:1-11
An army of locusts (2:1-11)Joel now pictures the approaching swarms of locusts as a person in Jerusalem sees them. He compares them to an enemy army and commands the watchman on the city wall to blow the trumpet to warn the city’s inhabitants of the attack. The swarms are so thick that they look like black clouds as they sweep down over the mountains (2:1-2). They spread over the countryside like an uncontrollable bushfire, turning healthy farmlands into barren wastes (3). People are terrified.... read more