The locust plague "could" be symbolic of the coming Babylonian invasion, but it is probably safe to just take the normal usage of the text--the Kingdom of Judah was economically decimated.
With every warning of judgment, there is opportunity for repentance and restoration.
As with many of the prophets--they saw future events like a mountain range, which appeared to be all together but would actually span centuries.
Though God chastened Israel they had His promise of a future and a hope. That is why Peter's quotation from Joel at Pentecost would have great meaning to the thousands of Jews present that day. I just finished my lesson, and I haven't even scratched the surface...
This is the comfort I get from God.
The locust plague "could" be symbolic of the coming Babylonian invasion This is why I have such a hard time with Joel, Daniel, Revelation, etc. I'm so uneducated regarding the historical context. These lessons are SOOOO important to me.
Thank you