Joel 2:25 - Matthew Poole's English Annotations on the Holy Bible

I will restore; make up to you, or compensate: the lean years of Egypt did eat up the fat, but with you now the fat years shall feed and enrich the lean ones. The years: by this it appears that this dreadful famine by these insects was longer than of one year's continuance, and perhaps countenanceth the Jewish conjecture of four because four sorts of insects are mentioned. These in the late years devoured the fruit of the earth, but now God will restore the fruits. The locust, & c.; all recounted Joel 1:4, with little variation of the order wherein named. My great army: see Joel 2:3-11. Which I sent: there was somewhat extraordinary in these armies of insects by which the people then living and afflicted by them might see they were sent immediately from Heaven, though history do not report it to us.