6 “ ‘Your western boundary will be the coast of the Mediterranean Sea. This will be your boundary on the west.

Read Numbers 34:6 Using Other Translations

And as for the western border, ye shall even have the great sea for a border: this shall be your west border.
"For the western border, you shall have the Great Sea and its coast. This shall be your western border.
“Your western boundary will be the coastline of the Mediterranean Sea.