Had it happened, surely Scripture would have recorded it as it does the three-and-a-half-year famine during Elijah's time. The image of the locusts serves as a metaphor for an invasion of foes, whether they be the Assyrians and Babylonians who threatened at that time, the Medes and Persians who followed, the Macedonians who arrived much later, or finally, the Romans mentioned previously. It seems that the Babylonians and Chaldeans, depicted as cruel and fierce adversaries towards God’s people, are primarily in view here, as suggested by certain indications within the prophetic text. The wickedness of these enemies is illustrated through the image of locusts, forming a comparison that causes one to evoke thoughts of the enemies when reading of locusts, and vice versa. A multitude arises from the wilderness, akin to a Chaldean army, strong and innumerable, upon the land of the Lord. For nothing is more numerous or powerful than locusts, which no human force can withstand. Their teeth represent the locusts, understood as fierce as the teeth of a lion, with jaws that reflect the same ferocity, thus aligning the strength and numbers of these foes to the savagery of lions. This people has ravaged my vineyard, which I brought out of Egypt and planted, and it has stripped my fig tree, symbolizing the Jewish people, whom the Savior approached seeking fruit, yet finding none; thus, he cursed it, and it withered eternally. All of this is expressed metaphorically through the devastation caused by locusts, which gnaw at tree bark and leave what is bare, so that once the sap is drained, only white, withered branches remain.
Now that we have addressed the historical significance, let us consider its spiritual implications. The adversaries that come against the soul—a territory belonging to God—are the representatives of the rulers of this age and the spiritual forces of wickedness in the heavenly realms, against whom we are called to contend. It is said, if the spirit of the oppressor rises against you, do not abandon your post. The strength of this people is likened to the teeth of a lion, as noted by the apostle Peter, who states that our adversary the devil prowls like a roaring lion, seeking whom he may devour. Their powerful jaws echo that of a lion’s as well, representing those who rebel against God’s order and truth or embody various false teachings. The crushing force of these hidden dangers, which lie concealed like the teeth within a lion's mouth, is a cause for the psalmist's declaration that the Lord will crush the teeth of the lions. If we permit this multitude to approach, they swiftly consume our vineyards, from which we derive the wine that brings joy to the heart, and they strip our fig trees, thus denying us the most precious gifts of the Holy Spirit. They seek not only to dismantle the vineyard and fig tree but to thoroughly scour them, obliterating every trace of vitality within them, leaving behind only lifeless and barren twigs, thereby fulfilling the saying: If they do these things in the green wood, what will become of the dry?