Brook of Egypt
The Brook of Egypt is a wadi identified in the Hebrew Bible as forming the southernmost border of the Land of Israel. A number of scholars have identified it with Wadi al-Arish, an ephemeral river flowing into the Mediterranean sea near the Egyptian city of Arish, while Israeli archaeologist Nadav Na'aman believes that the landform referenced in the Bible is the Besor Stream, just to the south of Gaza. Finally, another traditional Jewish interpretation is that the term refers to the Nile – a view that appears in ancient translations of the Jewish Bible, as preserved in the Neophiti and Vatican manuscripts.
A related phrase is , used in Genesis.
Wadi al-Arish
According to Exodus, the locality from which the Israelites journeyed after departing Egypt was Sukkot. The name Sukkot means "palm huts" in Hebrew and was translated Al-Arish in Arabic. It lies in the vicinity of Arish, the hometown of the Jewish commentator Saadia Gaon who identified Naḥal Mizraim with the Wadi al-Arish. Ishtori Haparchi, in his 14th-century work Kaftor va-Ferach , also identifies the Brook of Egypt as Wadi al-Arish.The Septuagint translates Naḥal Mizraim in Isaiah as Rhinocorura.
Although in later Hebrew the term naḥal tended to be used for small rivers, in Biblical Hebrew, the word could be used for any wadi or river valley.
According to Sara Japhet, "Nahal Mizraim" is Wadi al-Arish, which empties into the Mediterranean Sea about 30 miles south of Raphia, and "Shihor Mizraim" is the Nile.