From the south to Kadesh-barnea Rather, shall extend on the south to Kadesh-barnea westward. Unto the river of Egypt That is, the Nile. Not that the Jews did really extend their territories so far as the Nile; but thus far they were allowed to extend them. The goings out of it shall be at the sea The Midland or Mediterranean sea, called the sea, emphatically, and (Numbers 34:6,) the great sea, in opposition to the sea of Galilee, and the Dead sea, which are indeed but lakes. This midland sea was to be their western border.
Related Commentaries of Numbers 34:4
Numbers 34:4-6
4 And your border shall turn from the south to the ascent of Akrabbim, and pass on to Zin: and the going forth thereof shall be from the south to Kadeshbarnea, and shall go on to Hazaraddar, and pass on to Azmon:
5 And the border shall fetch a compass from Azmon unto the river of Egypt, and the goings out of it shall be at the sea.
6 And as for the western border, ye shall even have the great sea for a border: this shall be your west border.