'River' in the Bible

And Solomon held a feast at that time [of] seven days. And all Israel [was] with him, a very great assembly, from Lebo-Hamath to the river of Egypt.

And he ruled over all the kings from the River to the land of the Philistines, to the boundary of Egypt.

Then many people were gathered, and they blocked off all the springs and the river that flowed through the midst of the land, saying, "Why should the kings of Assyria come and find much water?"