Deuteronomy 1:7

On that day Yahweh cut a covenant with Abram, saying, “To your seed I have given this land, From the river of Egypt as far as the great river, the river Euphrates:

“And I will set your boundary from the Red Sea to the sea of the Philistines, and from the wilderness to the River; for I will give the inhabitants of the land into your hand, and you will drive them out from before you.

“Then we set out from Horeb and went through all that great and fearsome wilderness which you saw on the way to the hill country of the Amorites, just as Yahweh our God had commanded us; and we came to Kadesh-barnea.

“Every place on which the sole of your foot treads shall be yours; your border will be from the wilderness to Lebanon, and from the river, the river Euphrates, as far as the western sea.

Thus Joshua struck all the land—the hill country and the Negev and the Shephelah and the slopes—as well as all their kings. He left no survivor remaining, but he devoted to destruction all who breathed, just as Yahweh, the God of Israel, had commanded.

one saying to the sixth angel who had the trumpet, “Release the four angels who have been bound at the great river Euphrates.”