Joshua 15:5
And the east boundary is the Salt Sea, to the mouth of the Jordan. And the boundary on the north side runs from the bay of the sea at the mouth of the Jordan.
Numbers 34:12
And the border shall go down to the Jordan, and its limit shall be at the Salt Sea. This shall be your land as defined by its borders all around."
Numbers 34:10
"You shall draw a line for your eastern border from Hazar-enan to Shepham.
Joshua 18:15-19
And the southern side begins at the outskirts of Kiriath-jearim. And the boundary goes from there to Ephron,to the spring of the waters of Nephtoah.