שמות, פרק ח׳, פסוק ב׳

The second plague descends upon Egypt not as a sudden, overwhelming blow, but as a creeping, relentless tide that washes over the nation city by city and house by house. Unlike the plague of blood, where the river was struck directly, Aaron merely stretches his hand toward the water. This gesture is not an act of striking, but rather a quiet signal indicating that the creatures are now permitted to emerge [אבן עזרא]. By gesturing in various directions, Aaron sets off a gradual infestation that spreads steadily over several days until it brings the Egyptian empire to its knees [קאסוטו].

The emergence of the swarm is described as if only one frog came up from the water. The primary approach among commentators is that this serves as a collective noun representing the entire species [רש״י, אבן עזרא הקצר, חזקוני, ביאור יש״ר]. However, others find this unusual phrasing points to a deeper reality [תורה תמימה]. According to this perspective, a single, massive frog initially emerged. Enraged by its presence, the Egyptians began to strike it. Yet, the blinding nature of anger caused them to lose all rational judgment. Instead of killing the creature, every blow they landed caused it to spew forth additional swarms. Driven by a desire for revenge, they continued to attack, only escalating the disaster until the entire land was overrun [רש״י, צאינה וראינה, ברכת אשר על התורה]. Other traditions suggest that this initial frog whistled to summon the rest of its kind [תורה תמימה], or that the singular form represents the heavenly angel appointed over the frogs [שפתי כהן].

This miraculous multiplication from a single source starkly highlights the difference between God's power and the abilities of the Egyptian magicians. While the magicians could only gather wild frogs that already existed and bring them forward, they were entirely incapable of creating a new creature or duplicating it in such a manner, proving the divine origin of the plague [משכיל לדוד]. The sheer, unimaginable volume of creatures completely blanketed every inch of the country [רלב״ג, ביאור שטיינזלץ, קאסוטו]. Beyond the physical punishment, the precise spread of the infestation carried a political message. At the time, Egypt was embroiled in a border dispute with the neighboring kingdom of Cush. The Egyptian magicians hoped the creatures would spread beyond their borders, thereby artificially expanding Pharaoh's territory. Instead, God directed the swarm to stop exactly at the true boundary of Egypt, definitively settling the geographic conflict [פרדס יוסף].

When the burden becomes too great, Pharaoh finally asks Moses to pray for the plague's removal, but he strangely requests that it happen the following day. This delay is a calculated test. Pharaoh hopes the plague might naturally dissipate on its own that very day; by pushing the prayer to the next day, he attempts to see if Moses truly controls the events. When the plague finally ends, the creatures left in the open die, while those that had invaded people's bodies or the royal palace are allowed to survive out of respect for Pharaoh. Most remarkably, the frogs that had jumped directly into the burning ovens out of sheer devotion to fulfill God's command are miraculously saved from the flames and return safely to the river. This serves as a lasting lesson that those who are willing to sacrifice themselves for the sanctification of God's name are ultimately granted life [צאינה וראינה].