'River' in the Bible

Now a river flowed out from Eden that watered the garden, and from there it diverged and became four branches.

And the name of the third [is] Tigris. It flows east of Assyria. And the fourth river [is] the Euphrates.

On that day Yahweh {made} a covenant with Abram saying, "To your offspring I will give this land, from the river of Egypt to the great river, the Euphrates river,