Footnote
a Genesis 2:10-14 says: “There was a river issuing out of Eden to water the garden, and from there it began to be parted and it became, as it were, four heads. The first one’s name is Pishon . . . the name of the second river is Gihon . . . the name of the third river is Hiddekel [or, Tigris]; it is the one going to the east of Assyria. And the fourth river is the Euphrates.” The location and identity of the first two rivers are not known.