John Gills Exposition of the Bible Commentary - Joel 2:1
Blow ye the trumpet in Zion, and sound an alarm in my holy mountain ,.... This is spoken to the priests, whose business it was to blow the trumpets for calling solemn assemblies to meet in Zion, the temple built there, called from thence the holy mountain of God. Here the trumpet is ordered to be blown with a broken quivering voice, a tarantantara, to give notice of approaching danger by the locusts, or those enemies signified by them, and to prepare for it, and return to God by repentance; ... read more
Matthew Henry's Complete Commentary - Joel 2:1-11
Here we have God contending with his own professing people for their sins and executing upon them the judgment written in the law (Deut. 28:42), The fruit of thy land shall the locust consume, which was one of those diseases of Egypt that God would bring upon them, Deut. 28:60. I. Here is the war proclaimed (Joel 2:1): Blow the trumpet in Zion, either to call the invading army together, and then the trumpet sounds a charge, or rather to give notice to Judah and Jerusalem of the approach of the... read more