John Chrysostom
In that day, the Lord will provide a sign to the flies that dwell at the banks of the Nile. Can you perceive how futile my previous remarks were, claiming that in an attempt to instill greater dread, he issued threats from that day onward? This is evident in the subsequent statements, where he amplifies their terror by describing armies that are imposing to them, detailing the ease with which their foes could invade—a scenario likely to provoke strong agitation—and highlighting the sheer number of the forces, which undoubtedly captured their attention. All these sentiments are encapsulated in the declaration, “And it shall be,” as he proclaims, “And it shall come to pass in that day, that the Lord shall give a sign unto the flies.”
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The term “flies” he uses here refers to the Egyptians, alluding to their arrogance and shamelessness, as they persistently harassed the Israelites, offering no respite but instead continually causing them distress, akin to flies troubling an open wound. God indicates that He will bring them forth, but he does not merely state, “will bring them.” Instead, he declares, “will give them a sign,” signaling the ease of their encroachment and the invincibility of divine power, which can accomplish all things in an instant. The prophet wisely warns them in advance of such adversaries, whose assaults they had already faced.
“And the bee that is in the land of Assyria”—the plural form “bees” is noted in St. I. Zl. The texts in Syriac and Hebrew suggest the term used may actually refer to “wasps.” Since they had not yet encountered these enemies extensively, the prophet utilizes a comparison with this insect to evoke significant fear, conveying through the image of the wasp their potency, aggressiveness, vengefulness, severity of stings, swiftness of arrival, and the challenge of defense against them.