'River' in the Bible

David struck also Hadadezer the son of Rehob, king of Zobah, as he went to recover his dominion at the River.

Hadadezer sent, and brought out the Syrians who were beyond the River: and they came to Helam, with Shobach the captain of the army of Hadadezer at their head.

Moreover, if he be gone into a city, then shall all Israel bring ropes to that city, and we will draw it into the river, until there isn't one small stone found there."