Genesis 2:10-15

And a river went out of Eden to water the garden; and from thence it was parted, and became four heads. The name of the first is Pishon: that is it which compasseth the whole land of Havilah, where there is gold; and the gold of that land is good: there is bdellium and the onyx stone. And the name of the second river is Gihon: the same is it that compasseth the whole land of Cush. And the name of the third river is Hiddekel: that is it which goeth in front of Assyria. And the fourth river is the Euphrates. And Jehovah God took the man, and put him into the garden of Eden to dress it and to keep it.