Joshua 15:2

Their southern border began at the tip of the Dead Sea on the south bay

Genesis 14:3

All of these came as allies to the Valley of Siddim (that is, the Dead Sea).

Numbers 34:3

Your southern side will be from the Wilderness of Zin along the boundary of Edom. Your southern border on the east will begin at the east end of the Dead Sea.

Joshua 3:16

and the water flowing downstream stood still, rising up in a mass that extended as far as Adam, a city next to Zarethan. The water flowing downstream into the Sea of the Arabah (the Dead Sea) was completely cut off, and the people crossed opposite Jericho.

Isaiah 11:15

The Lord will divide the Gulf of Suez.
He will wave His hand over the Euphrates
with His mighty wind
and will split it into seven streams,
letting people walk through on foot.

Ezekiel 47:8

He said to me, “This water flows out to the eastern region and goes down to the Arabah. When it enters the sea, the sea of foul water, the water of the sea becomes fresh.

Ezekiel 47:18

On the east side it will run between Hauran and Damascus, along the Jordan between Gilead and the land of Israel; you will measure from the northern border to the eastern sea. This will be the eastern side.

Treasury of Scripture Knowledge

Summary

And their south border was from the shore of the salt sea, from the bay that looketh southward:

Bible References

The salt sea

Joshua 3:16
and the water flowing downstream stood still, rising up in a mass that extended as far as Adam, a city next to Zarethan. The water flowing downstream into the Sea of the Arabah (the Dead Sea) was completely cut off, and the people crossed opposite Jericho.
Genesis 14:3
All of these came as allies to the Valley of Siddim (that is, the Dead Sea).
Numbers 34:3
Your southern side will be from the Wilderness of Zin along the boundary of Edom. Your southern border on the east will begin at the east end of the Dead Sea.
Ezekiel 47:8
He said to me, “This water flows out to the eastern region and goes down to the Arabah. When it enters the sea, the sea of foul water, the water of the sea becomes fresh.

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.