And a river went out of Eden to water the garden; and from there it was parted, and became four heads.
All Commentaries on Genesis 2:10 Go To Genesis 2
John of Damascus
AD 749
Then there is the ocean that encircles the entire earth like a sort of river and to which it seems to me that Scripture referred when it said that “a river flowed out of paradise.” It has sweet potable water and supplies the seas, but because the water remains stagnant in the seas for a long time it becomes brackish. The sun and the waterspouts are constantly drawing up the less dense water, and from this the clouds are formed and the rain comes, the water becoming sweet by filtration. This ocean is divided into four heads, of four rivers. The name of the first is Pishon; this is the Ganges of India. The name of the second is Gehon; this is the Nile, which comes down from Ethiopia into Egypt. The name of the third is Tigris, and of the fourth, Euphrates.
