Isaiah 19:5

“And the waters shall fail from the sea, &c.] Which Kimchi understands figuratively of the destruction of the Egyptians by the king of Assyria, compared to the drying up of the waters of the Nile; and others think that the failure of their trade by sea is meant, which brought great revenues into the kingdom: but, by what follows, it seems best to take the words in a literal sense, of the waters of the river Nile, which being dried up, as in the next clause, could not empty themselves into the sea, as they used, and therefore very properly may be said to fail from it; nay, the Nile itself may be called a sea, it being so large a confluence of water: and the river shall be wasted and dried up;…”

“the sea--the Nile. Physical calamities, it is observed in history, often accompany political convulsions (Eze 30:12). The Nile shall "fail" to rise to its wonted height, the result of which will be barrenness and famine. Its "waters" at the time of the overflow resemble "a sea" [PLINY, Natural History, 85.11]; and it is still called El-Bahr," "the sea," by the Egyptians (Isa 18:2; Jer 51:36). A public record is kept at Cairo of the daily rise of the water at the proper time of overflow, namely, August: if it rises to a less height than twelve cubits, it will not overflow the land, and famine must be the result. So, also, when it rises higher than sixteen; for the waters are not drained off…”

“And the waters shall fail - Here commences a description of the “physical” calamities that would come upon the land, which continues to Isaiah 19:10. The previous verses contained an account of the national calamities by civil wars. It may be observed that discord, anarchy, and civil wars, are often connected with physical calamities; as famine, drought, pestilence. God has the elements, as well as the hearts of people, under his control; and when he chastises a nation, he often mingles anarchy, famine, discord, and the pestilence together. Often, too, civil wars have a “tendency” to produce these calamities. They annihilate industry, arrest enterprise, break up plans of commerce, and divert…”

“The waters - Which may be understood either, Metaphorically, of the taking away of their dominion or commerce, &c. or rather, Properly, as may be gathered from the following words. For as the river Nile, when it had a full stream, and free course, did pour forth a vast quantity of waters by its seven famous mouths into the sea, so when that was dried up, which is expressed in the next clause, those waters did truly and properly fail from the sea. So there is no need of understanding by sea either the river Nile, or the great lake of Maeris, which, after the manner of the Hebrews, might be so called. The river - Nile: upon whose fulness and overflow both the safety and the wealth of the land…”

“19:5 The waters of the Nile were Egypt’s lifeline. Any disturbance in the regular pattern of flooding affected the whole nation. In ancient Egypt, the Nile was considered to be a god. However, the true God could easily dry it up.”

“Jer 51:36; Eze 30:12; Zac 10:11, Zac 14:18 Isaiah 19:6”

“The prophet then proceeds to foretell another misfortune which was coming upon Egypt: the Nile dries up, and with this the fertility of the land disappears. "And the waters will dry up from the sea, and the river is parched and dried. And the arms of the river spread a stench; the channels of Matzor become shallow and parched: reed and rush shrivel up. The meadows by the Nile, on the border of the Nile, and every corn-field of the Nile, dries up, is scattered, and disappears. And the fishermen groan, and all who throw draw-nets into the Nile lament, and they that spread out the net upon the face of the waters languish away. And the workers of fine combed flax are confounded, and the weavers…”