Numbers 34:6 in the King James Version
And as for the western border, ye shall even have the great sea for a border: this shall be your west border.
Context
5 The border shall turn about from Azmon to the brook of Egypt, and it shall end at the sea.
6 “‘For the western border, you shall have the great sea and its border. This shall be your west border.
7 “‘This shall be your north border: from the great sea you shall mark out for yourselves Mount Hor.