And as for the western border,.... Of the land of Canaan:

you shall even have the great sea for a border; and no other, meaning the Mediterranean sea, which lies west of the land of Judea; Aben Ezra calls it the Spanish sea: it has the name of "great", in comparison of some in the land of Canaan, as the salt sea, and the sea of Tiberias:

this shall be your west border; namely, the Mediterranean sea.

the western border--There is no uncertainty about this boundary, as it is universally allowed to be the Mediterranean, which is called "the great sea" in comparison with the small inland seas or lakes known to the Hebrews.