That which the palmer-worm hath left hath the locust eaten A succession of noxious creatures hath perfectly destroyed the fruits of the earth; which makes this judgment so strange and remarkable. It is usual with the prophets to speak of things which were certainly about to take place, as already come to pass; and it is likely that the prophet speaks thus here; and that the sense is, That which the palmer-worm shall leave the locust shall eat. Bochart hath assigned many probable reasons to show that the four Hebrew words here used signify four species of locusts.
Related Commentaries of Joel 1:4
Joel 1:4
4 That which the palmerworma hath left hath the locust eaten; and that which the locust hath left hath the cankerworm eaten; and that which the cankerworm hath left hath the caterpiller eaten.