Numbers 34:6

And as for the western border, you shall even have the Great Sea for a border: this shall be your west border.

Joshua 1:4

From the wilderness and this Lebanon even unto the great river, the river Euphrates, all the land of the Hittites, and unto the great sea toward the going down of the sun, shall be your territory.

Joshua 9:1

And it came to pass, when all the kings who were on this side of Jordan, in the hills, and in the valleys, and in all the coasts of the great sea toward Lebanon, the Hittite, and the Amorite, the Canaanite, the Perizzite, the Hivite, and the Jebusite, heard of it;

Joshua 15:12

And the west border was to the Great Sea, and its coast. This is the boundary round about the children of Judah according to their families.

Joshua 15:47

Ashdod with its towns and its villages, Gaza with its towns and its villages, unto the river of Egypt, and the great sea, and its coastline:

Joshua 23:4

Behold, I have divided unto you by lot these nations that remain, to be an inheritance for your tribes, from the Jordan, with all the nations that I have cut off, even unto the Great Sea westward.

Ezekiel 47:10

And it shall come to pass, that the fishermen shall stand upon it from En-gedi even unto En-eglaim; there shall be a place to spread forth nets; their fish shall be the same kinds as the fish of the great sea, exceedingly many.

Ezekiel 47:15

And this shall be the border of the land toward the north side, from the great sea, the road to Hethlon, as men go to Zedad;

Ezekiel 47:20

The west side also shall be the great sea from the border, till one comes opposite Hamath. This is the west side.

Treasury of Scripture Knowledge

Summary

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

Bible References

General references

Joshua 1:4
From the wilderness and this Lebanon even unto the great river, the river Euphrates, all the land of the Hittites, and unto the great sea toward the going down of the sun, shall be your territory.
Joshua 9:1
And it came to pass, when all the kings who were on this side of Jordan, in the hills, and in the valleys, and in all the coasts of the great sea toward Lebanon, the Hittite, and the Amorite, the Canaanite, the Perizzite, the Hivite, and the Jebusite, heard of it;
Joshua 15:12
And the west border was to the Great Sea, and its coast. This is the boundary round about the children of Judah according to their families.
Joshua 23:4
Behold, I have divided unto you by lot these nations that remain, to be an inheritance for your tribes, from the Jordan, with all the nations that I have cut off, even unto the Great Sea westward.
Ezekiel 47:10
And it shall come to pass, that the fishermen shall stand upon it from En-gedi even unto En-eglaim; there shall be a place to spread forth nets; their fish shall be the same kinds as the fish of the great sea, exceedingly many.