Adam Clarke Bible Commentary

They saw not one another - So deep was the obscurity, and probably such was its nature, that no artificial light could be procured; as the thick clammy vapors would prevent lamps, etc., from burning, or if they even could be ignited, the light through the palpable obscurity, could diffuse itself to no distance from the burning body. The author of the book of The Wisdom of Solomon 17:2-19, gives a fearful description of this plague. He says, "The Egyptians were shut up in their houses, the prisoners of darkness: and were fettered with the bonds of a long night. They were scattered under a dark veil of forgetfulness, being horribly astonished and troubled with strange apparitions; for neither might the corner that held them keep them from fear; but noises as of waters falling down sounded about them; and sad visions appeared unto them with heavy countenances. No power of the fire could give them light - only there appeared unto them a fire kindled of itself very dreadful; for being much terrified, they thought the things which they saw to be worse than the sight they saw not. For though no terrible thing did scare them, yet being scared with beasts that passed by, and hissing of serpents, they died for fear: for whether he were husbandman, or shepherd, or a laborer in the field, he was overtaken; for they were all bound with one chain of darkness. Whether it were a whistling wind, or a terrible sound of stones cast down, or a running that could not be seen of tripping beasts, or a roaring voice of most savage wild beasts, or a rebounding echo from the hollow mountains, these things made them to swoon for fear." See Psa 78:49. To this description nothing need be added except this circumstance, that the darkness, with its attendant horrors, lasted for three days. All the children of Israel had light - By thus distinguishing the Israelites, God showed the Egyptians that the darkness was produced by his power; that he sent it in judgment against them for their cruelty to his people; that because they trusted in him they were exempted from these plagues; that in the displeasure of such a Being his enemies had every thing to fear, and in his approbation his followers had every thing to hope.