While he means physical Israel, you can see his spiritual meaning as well from the view of a fallen but purified believer.
Joel 2:25, 27 NKJV
So I will restore to you the years that the swarming locust has eaten, The crawling locust, The consuming locust, And the chewing locust, My great army which I sent among you. Then you shall know that I am in the midst of Israel: I am the Lord your God And there is no other. My people shall never be put to shame.