Genesis 2:10

A river went out of Eden. — Out of the large region of which the garden formed a part. The tenses, too, are present, as if the main features of the country remained unchanged: “a river goeth forth from Eden, and thence outside of it is parted, and becometh four main streams.” The idea is that of a stream rising in Eden, and flowing through the Paradise, and at some distance outside of it divided into four great rivers. This has made many suppose that the site of Paradise was in the Persian Gulf, in a region now submerged; and the Babylonian legends actually place it there, at Eridu, at the junction of the Tigris and Euphrates. The two other rivers they suppose to have been the Indus and the Nile, represented by the two coasts of the Persian Gulf. Sir H. Rawlinson suggests the Babylonian province of Gan-duniyas, where four rivers may be found; but in neither case could the ark have floated against the current of the flood up to the highlands of Armenia. We must add that many authors of note have regarded the whole as symbolical, among whom is the famous Syriac writer, Bar-Hebraeus, who regards it as a description of the human body.