Numbers 34:6

And as west border ye shall have the great sea, and its coast. This shall be your west border.

Joshua 1:4

From the wilderness and this Lebanon to the great river, the river Euphrates, the whole land of the Hittites, to the great sea, toward the going down of the sun, shall be your border.

Joshua 9:1

And it came to pass when all the kings who were on this side the Jordan, in the hill-country, and in the lowland, and along all the coast of the great sea as far as opposite to 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 is 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, its dependent villages and its hamlets; Gazah, its dependent villages and its hamlets, as far as the torrent of Egypt, and the great sea and its coast.

Joshua 23:4

Behold, I have divided unto you by lot for an inheritance, according to your tribes, these nations that remain, from the Jordan, as well as all the nations that I have cut off, as far as the great sea toward the sun-setting.

Ezekiel 47:10

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

Ezekiel 47:15

And this shall be the border of the land: toward the north side, from the great sea, the way of Hethlon, as one goeth to Zedad,

Ezekiel 47:20

And the west side shall be the great sea from the border, as far as over against the entering into 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 to the great river, the river Euphrates, the whole land of the Hittites, to the great sea, toward the going down of the sun, shall be your border.
Joshua 9:1
And it came to pass when all the kings who were on this side the Jordan, in the hill-country, and in the lowland, and along all the coast of the great sea as far as opposite to 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 is 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 unto you by lot for an inheritance, according to your tribes, these nations that remain, from the Jordan, as well as all the nations that I have cut off, as far as the great sea toward the sun-setting.
Ezekiel 47:10
And it shall come to pass, that fishers shall stand upon it; from En-gedi even unto En-eglaim shall be a place to spread forth nets: their fish shall be according to their kinds, as the fish of the great sea, exceeding many.