Numbers 34:6

And as for the western border, ye 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 to the great river, the river Euphrates, all the land of the Hittites, and to the great sea towards the setting of the sun, shall be your border.

Joshua 9:1

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

Joshua 15:12

And the west border was to the great sea, and its coast: this is the border of the children of Judah round about, according to their families.

Joshua 15:47

Ashdod, with her towns and her villages; Gaza, with her towns and her villages, to the river of Egypt, and the great sea, and its border:

Joshua 23:4

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

Ezekiel 47:10

And it shall come to pass, that the fishers shall stand upon it from En-gedi even to En-eglaim; they shall be a place to spread forth nets; their fish shall be according to their kinds, as the fish of the great sea, very numerous.

Ezekiel 47:15

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

Ezekiel 47:20

The west side also shall be the great sea from the border, till a man cometh over against 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 to the great river, the river Euphrates, all the land of the Hittites, and to the great sea towards the setting of the sun, shall be your border.
Joshua 9:1
And it came to pass, when all the kings who were on this side Jordan, in the hills, and in the valleys, and in all the coasts of the great sea over against Lebanon, the Hittite, and the Amorite, the Canaanite, the Perizzite, the Hivite, and the Jebusite heard these things,
Joshua 15:12
And the west border was to the great sea, and its coast: this is the border of the children of Judah round about, according to their families.
Joshua 23:4
Behold, I have divided to you by lot these nations that remain, to be an inheritance for your tribes, from Jordan, with all the nations that I have cut off, even to the great sea westward.
Ezekiel 47:10
And it shall come to pass, that the fishers shall stand upon it from En-gedi even to En-eglaim; they shall be a place to spread forth nets; their fish shall be according to their kinds, as the fish of the great sea, very numerous.