Isaiah 19:6

“And they shall turn the rivers far away, &c.] The river Nile, called “rivers”, the plural for the singular, because of the abundance of water in it; or its seven streams, with other rivulets, derived from it. Some make the “they” here to refer to the kings of Egypt, and interpret the words of some projects of theirs, by which the course of the river was turned to great disadvantage; particularly they understand it of the twelve tyrants that reigned after Sethon, to whom they ascribe the digging of the vast lake of Moeris, the two pyramids built in the midst of it, and a labyrinth near it, though only the labyrinth was made by themf368; and as for the lake, it was made by Moeris, a king of…”

“they shall turn the rivers--rather, "the streams shall become putrid"; that is, the artificial streams made for irrigation shall become stagnant and offensive when the waters fail [MAURER]. HORSLEY, with the Septuagint, translates, "And waters from the sea shall be drunk"; by the failure of the river water they shall be reduced to sea water. brooks of defence--rather, "canals of Egypt"; "canals," literally, "Niles," Nile canals, the plural of the Egyptian term for the great river. The same Hebrew word, Matzor, whence comes Mitzraim, expresses Egypt, and a place of "defense." HORSLEY, as English Version translates it, "embanked canals," reeds . . . flags--the papyrus. "Reed and rush"; utter…”

“And they shall turn the rivers far away - (האזיּחוּ he'ezenı̂ychû), probably from זנח zânach, “to have an offensive smell; to be rancid, or putrid.” The word in this form occurs nowhere else. It is in the Hiphil conjugation, and is probably a form made from a mixture with the Chaldee. The sense is not doubtful. It means ‘the rivers shall become putrid - or have an offensive smell;’ that is, shall become stagnant, and send forth unwholesome “miasmata” producing sickness, as stagnant waters often do. The Vulgate renders it, ‘And the rivers shall fail.’ The Septuagint, ‘And the Egyptians shall drink the waters from the sea, but the river shall fail, and be dried up, and the rivers shall fail,…”

“Rivers - The rivers (those rivulets by which the waters of Nile were distributed into several parts of the land) shall be turned far away, as they must needs be, when the river which fed them was dried up. Brooks - The several branches of the river Nile, which were a great defence to Egypt. Reeds - Which were useful to them for making their boats. Whither - As they commonly do for want of water. Isaiah 19:7”

“and the: Isa 37:25; Kg2 19:24 the reeds: Isa 18:2; Exo 2:3; Job 8:11 Isaiah 19:7”