Ezra 4:16
We certify to the king that if this city is rebuilt and its walls completed, you will lose your land holdings in the province beyond the Euphrates River.
2 Samuel 8:3
David also attacked King Hadadezer, Rehob's son from Zobah, when he was attempting to restore his hegemony over the Euphrates River.
1 Kings 4:24
He ruled over everything west of the Euphrates River from Tiphsah to Gaza, over all of the kings west of the Euphrates River, and he enjoyed peace on all sides around him.
Ezra 4:20
Powerful kings have reigned over Jerusalem, including ruling over all lands beyond the Euphrates River. Furthermore, taxes, tribute, and tolls have been paid to them.