Isaiah 44:27

“That saith to the deep, be dry, &c.] The Targum is, “that saith to Babylon, be desolate;” and most interpreters, Jewish and Christian, understand it of Babylon, which was situated in a watery place, by rivers of water, particularly the river Euphrates, and in a low valley: and I will dry up thy rivers; some think the allusion is to the stratagem of Cyrus, made use of, under a divine direction, to drain the river Euphrates, and make it passable for his army; by which means he surprised the city of Babylon, and took it: though others think it refers to the drying up of the Red sea and the river Jordan, which are proofs of what God can do, and a periphrasis of his power.”

“Referring to the Euphrates, which was turned into a different channel, close to Babylon, by Cyrus, who thereby took the city. "The deep" is applied to Euphrates as "sea" (Jer 51:32, Jer 51:36). "Rivers" refers to the artificial canals from the Euphrates made to irrigate the country; when it was turned off into a different bed (namely, a lake, forty miles square, which was originally formed to receive the superfluous water in an inundation), the canals became dry.”

“That saith to the deep, Be dry - Lowth supposes, that this refers to the fact that Cyrus took Babylon by diverting from their course the waters of the river Euphrates, and thus leaving the bed of the river dry, so that he could march his army under the walls of the city (see the notes at Isaiah 13:0; Isaiah 14:0) With this interpretation, also, Vitringa, John II Michaelis, Grotius, Rosenmuller, and some others, accord. Gesenius supposes that it is a description of the power of God in general; and some others have referred it to the dividing of the waters of the Red Sea when the Hebrews came out of Egypt, as in Isaiah 43:16-17. The most obvious interpretation is that of Lowth, Vitringa, etc.,…”

“That saith - That with a word can dry up the sea and rivers, and remove all impediments. Isaiah 44:28”

“44:27 The sudden depletion of natural resources at times indicates a divine judgment (see 42:15; cp. 43:20). Here, however, God’s ability to dry up streams with just a word illustrates his power to do what he said he would do through Cyrus of Persia.”

“Be dry: Isa 11:15, Isa 11:16, Isa 42:15, Isa 43:16, Isa 51:15; Psa 74:15; Jer 50:38, Jer 51:32, Jer 51:36; Rev 16:12 Isaiah 44:28”