שמות, פרק י׳, פסוק כ״ב

The plague of darkness stands out as the ultimate display of God's mastery over the natural properties of light. Unlike prior plagues where the distinction between the Israelites and the Egyptians was clearly visible, this plague created a disconnect so absolute that the Egyptians could not even see that the Israelites were spared. It carried a profound measure-for-measure consequence: the Egyptians, who had cruelly enslaved the Israelites and chained them as prisoners, now found themselves blinded in the dark and effectively chained to their places, completely unable to move [ביאור יש״ר].

Moses initiated this plague by stretching out his hand rather than his staff, a noticeable departure from his actions during the plagues of hail and locusts. Because this darkness descended from a lofty divine source, raising a physical staff toward the heavens was considered disrespectful [אור החיים]. Alternatively, the absence of the staff hints at a strong hand directed inward at the Israelites themselves, specifically targeting the sinners within the nation who died during this period [העמק דבר].

The darkness was absolute and extreme, plunging all of reality into a state of total obscurity and doubt [רשב״ם, קאסוטו, ביאור שטיינזלץ, רש ר הירש]. Opinions vary regarding its physical nature. Some suggest it was a severe natural phenomenon, such as a massive sandstorm [קאסוטו] or a dense oceanic fog that obliterated the distinction between day and night [אבן עזרא]. However, the primary approach among commentators is that the darkness was entirely supernatural. It is described either as thick, tangible vapors rising from the underworld to block out all light rays, or conversely, as a revelation of hidden divine light. This spiritual illumination was so intense that it blinded the materialistic Egyptians, while allowing the Israelites to see clearly even into the most concealed spaces [מלבי״ם].

The designated period of three days represents a continuous, unbroken block of time [רש״י, מזרחי, גור אריה], perhaps composed of partial days joined together [לבוש האורה]. Nights are unmentioned simply because the darkness rendered day and night entirely indistinguishable [אבן עזרא]. In truth, the commentators explain that the plague lasted for six days, divided into two distinct phases, with a final seventh day of darkness reserved for the future splitting of the sea [חזקוני, משכיל לדוד]. During the first three days, the darkness merely prevented the Egyptians from seeing one another. The primary goal of this phase was not punishment, but privacy. It allowed for the quiet death and burial of the wicked Israelites who refused to leave Egypt, ensuring the Egyptians could not witness and rejoice over their downfall [רש״י, נחלת יעקב].

The final three days brought a multiplied, suffocating darkness. The Egyptians were physically paralyzed, frozen by terror [פרדס יוסף], and even their hearing was blocked [לבוש האורה]. This absolute paralysis served a strategic purpose: it allowed the Israelites to freely enter Egyptian homes and locate their valuables. Because the Israelites only looked and took nothing while their oppressors were entirely helpless, they demonstrated impeccable honesty. Later, when the Israelites requested these items upon their departure and the Egyptians feigned ignorance, the Israelites could pinpoint the exact hiding spots. Faced with this undeniable knowledge and grateful that they had not been violently looted, the Egyptians willingly yielded their wealth [שפתי חכמים, יריעות שלמה].