'River' in the Bible

I will cut off the [war] chariot from EphraimAnd the [war] horse from Jerusalem,And the bow of war will be cut off.And He will speak [words of] peace to the nations,And His dominion shall be from sea to sea [absolutely endless],And from the River [Euphrates] to the ends of the earth.

“And they will pass through the sea of distress and anxiety [with the Lord leading His people, as at the Red Sea]And He will strike the waves in the sea,So that all the depths of the Nile will dry up;And the pride of Assyria will be brought downAnd the scepter [of the taskmasters] of Egypt will pass away.