שמות, פרק ט׳, פסוק ו׳

The sudden plague of pestilence delivers a devastating blow to the Egyptian economy while simultaneously drawing a sharp, invisible line between the property of the oppressors and the oppressed. Beyond the physical destruction, this event carries a profound theological message aimed directly at the core of Egyptian beliefs.

God executes this plague directly, entirely bypassing Moses and Aaron. This direct action demonstrates God's personal, immediate providence over the world, showing He requires no intermediaries to carry out His will [מלבי״ם]. Because the plague serves as a punishment for idolatry [ביאור יש״ר], and the Egyptians worshipped livestock, God strikes their false gods right before their eyes. This public destruction proves that these animal deities hold no power and are nothing to fear [בכור שור].

A puzzle arises regarding the extent of the destruction, as the Egyptians clearly still possess animals during the later plague of hail. The primary approach among commentators is that the destruction is not absolute. Rather, it refers to the vast majority of the animals, using a style of exaggeration common in the Bible [אבן עזרא, רלב״ג, קאסוטו]. Another perspective suggests that the plague does not kill every animal in Egypt, but rather every animal that does die belongs exclusively to the Egyptians [הדר זקנים, חזקוני, פענח רזא, בכור שור]. A third approach explains that the plague only targets animals left out in the open fields, while any livestock brought indoors survives [אור החיים, ביאור יש״ר, רלב״ג]. However, some reject this idea, noting that even Egyptians who have no fear of God, and who would not bother to bring their animals inside, still possess livestock later on [הדר זקנים, בכור שור].

A miraculous distinction is made regarding the Israelite camps, where not a single animal dies. The wonder of this event is magnified by the fact that Egyptian and Israelite flocks graze side by side in the same pastures, highlighting God's exact and precise control over the physical world [ביאור יש״ר]. This divine protection even extends to the livestock of wicked Israelites, preserved so that the righteous might eventually inherit their wealth [העמק דבר]. Furthermore, survival depends entirely on genuine ownership. Some Egyptians attempt to cheat the plague by creating fake transfers of ownership, pretending their livestock belongs to Israelites. This deception fails, and their animals die anyway; only livestock truly owned by Israelites survives [אור החיים].

Ironically, the complete survival of the Israelite flocks is exactly what causes Pharaoh to remain stubborn. Realizing that the Israelites still have all their livestock, he concludes that he can simply confiscate their animals by force to replace his own economic losses. Alternatively, Pharaoh's refusal to free the people stems from a misunderstanding. He mistakenly identifies one dead animal as belonging to an Israelite, though it actually belongs to someone of mixed descent with an Egyptian father. Relying on this false evidence that the plague crossed the dividing line, Pharaoh refuses to let the Israelites go [פרדס יוסף].