Numbers 34:3 defines the southern border from the Salt Sea, which is the same endpoint as the eastern border in Numbers 34:12.

Genesis 14:3 identifies the Salt Sea as the Valley of Siddim, giving historical context to the border point.

Genesis 13:15 is God's promise of this land to Abraham, which Numbers 34:12's border helps define.

Deuteronomy 3:17 gives the same eastern border description, confirming the Salt Sea as the boundary.

Joshua 15:5 uses the Salt Sea as Judah's eastern border, showing this boundary in practice.

Genesis 13:10 describes the lush Jordan Valley before destruction, showing the region that later became the Salt Sea border.