'River' in the Bible

From the wilderness and this Lebanon, even as far as the great river, the river Euphrates, all the land of the Hittites, and as far as the Great Sea toward the setting of the sun will be your territory.

Joshua said to all the people, “Thus says the Lord, the God of Israel, ‘From ancient times your fathers lived beyond the River, namely, Terah, the father of Abraham and the father of Nahor, and they served other gods.

Then I took your father Abraham from beyond the River, and led him through all the land of Canaan, and multiplied his descendants and gave him Isaac.

“Now, therefore, fear the Lord and serve Him in sincerity and truth; and put away the gods which your fathers served beyond the River and in Egypt, and serve the Lord.

If it is disagreeable in your sight to serve the Lord, choose for yourselves today whom you will serve: whether the gods which your fathers served which were beyond the River, or the gods of the Amorites in whose land you are living; but as for me and my house, we will serve the Lord.”