And the border shall go down to Jordan,.... A well known river to the east of the land of Canaan:

and the goings out of it shall be at the salt sea; the sea of Sodom; and though all sea water is generally salt, this was remarkably so, through the great quantity of bitumen and nitre in it; hence it was called Asphaltites; thus as the description of the borders of the land began with the salt sea, Num 34:3, it ends with it:

this shall be your land, with the coasts thereof round about: which, according to the Targum of Jonathan, was thus bounded, Rekamgea (or Kadeshbarnea) on the south, Taurus Urnanus (by which he interprets Mount Hor) on the north, the great sea on the west (i.e. the Mediterranean sea), and the salt sea on the east.

east border--This is very clearly defined. Shepham and Riblah, which were in the valley of Lebanon, are mentioned as the boundary line, which commenced a little higher than the sources of the Jordan. Ain is supposed to be the source of that river; and thence the eastern boundary extended along the Jordan, the sea of Chinnereth (Lake of Tiberias), the Jordan; and again terminated at the Dead Sea. The line being drawn on the east of the river and the seas included those waters within the territory of the western tribes.