Go west across the sea to the coasts of Cyprus and see. Send someone east to Kedar and have them look carefully. See if such a thing as this has ever happened:

For thus says the Lord in regard to the house of the king of Judah:

“You are [as valuable] to Me as [the green pastures of] Gilead [east of the Jordan]
Or as the [plentiful] summit of Lebanon [west of the Jordan],
Yet most certainly [if you will not listen to Me] I will make you a wilderness,
And uninhabited cities.

And I will bring Israel [home] again to his pasture and he will graze on [the most fertile lands of] Carmel [in the west] and Bashan [in the east], and his soul will be satisfied on the hills of Ephraim and Gilead.

The boundary line will extend beyond that, straight west from there to the Hill of Gareb and then turn southward to Goah.

Of Kedar. And of the kingdoms of Hazor Which Nebuchadrezzar king of Babylon smote - Thus, saith Yahweh, - Arise ye go up against Kedar, So shall they spoil the sons of the East:

And so it was when they had come into the midst of the city, that Ishmael son of Nethaniah slew them and east them into the midst of a pit, he and the men who were with him.

Like the wind from the east I will scatter them {before} [the] enemy. I will show them [my] back and not [my] face in the day of their disaster.'"

And the whole of the valley [of] the corpses, and the ashes, and all the cultivated fields up to the wadi of Kidron, up to the corner of the Gate of the Horses [toward the] east [will be] holy to Yahweh. It will not be uprooted, and it will not be overthrown again {forever}."