Numbers 34:3-7

Then your south quarter shall be from the wilderness of Zin along by the coast of Edom, and your south border shall be the outmost coast of the salt sea eastward:

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 Kadesh-barnea, and shall go on to Hazar-addar, and pass on to Azmon:

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.

And as for the western border, ye shall even have the great sea for a border: this shall be your west border.

And this shall be your north border: from the great sea ye shall point out for you mount Hor: