Numbers 34:5

“And the border shall fetch a compass, etc.] Not go on in a straight line, but turn about: from Azmon unto the river of Egypt; the river Nile, as both the Targums of Jonathan and Jerusalem; but Aben Ezra seems to deny that that river is meant: and some think that Rhinocolura, which flows into the Mediterranean sea, is meant; or the “valley of Egypt”, Casiotis, which divided Judea from Egypt, as follows: and the goings out of it; not of the river, but of the border: shall be at the sea; the above sea, called in the next verse the great sea; all the Targums render it to the west.”

“river of Egypt--the ancient brook Sihor, the Rhinocolura of the Greeks, a little to the south of El-Arish, where this wady gently descends towards the Mediterranean (Jos 13:3).”

“The southern boundary commenced at the Dead Sea. The broad and desolate valley by which the depressed bed of that sea is protected toward the south, is called the Ghor. A deep narrow glen enters it at its southwest corner; it is called Wady-el-Fikreh, and is continued in the same southwestern direction, under the name of Wady el-Marrah; a wady which loses itself among the hills belonging to “the wilderness of Zin;” and Kadesh-barnea (see Numbers 13:26 note), which is “in the wilderness of Zin,” will be, as the text implies, the southernmost point of the southern boundary. Thence, if Kadesh be identical with the present Ain el-Weibeh, westward to the river, or brook of Egypt, now Wady…”

“The river of Egypt - Called Sihor, Jos 13:3, which divided Egypt from Canaan. The sea - The midland sea, called the sea emphatically, whereas the other seas, as they are called, are indeed but lakes. Numbers 34:6”

“34:5 The Brook of Egypt (not to be confused with the Nile) designates the wadi that separates the land of Canaan from Egypt; it drains toward the Mediterranean Sea (cp. 1 Kgs 8:65). In Old Testament times, Israel exercised little control over this southern coastal region.”

“the river: Gen 15:18; Jos 15:4, Jos 15:47; Kg1 8:65; Isa 27:12 the sea: Num 34:6, Num 34:7 Numbers 34:6”