'River' in the Bible

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

And the serpent poured water like a river out of his mouth after the woman, so that he might cause her to be swept away with the flood.

But the earth helped the woman, and the earth opened its mouth and drank up the river which the dragon poured out of his mouth.

The sixth angel poured out his bowl on the great river, the Euphrates; and its water was dried up, so that the way would be prepared for the kings from the east.

Then he showed me a river of the water of life, clear as crystal, coming from the throne of God and of the Lamb,

in the middle of its street. On either side of the river was the tree of life, bearing twelve kinds of fruit, yielding its fruit every month; and the leaves of the tree were for the healing of the nations.