What Does Genesis 2:10 Mean?

The Gihon flows around the land of Cush (associated in Genesis 10 with the descendants of Ham, often identified with areas south and east of Mesopotamia). The Tigris flows to the east of Assyria, and the Euphrates is named without further description, familiar enough to need no locator. Together the four rivers create a geography that places Eden at the intersection of lands stretching from the Arabian Peninsula to Mesopotamia. The garden is geographically anchored in the ancient Near Eastern world.

The Euphrates is the last of the four rivers and requires no description, it was the most well-known waterway in the ancient world, the backbone of Mesopotamian civilization. Its mention alongside the less familiar Pishon and Gihon places the familiar within an unfamiliar framework. The garden world includes the greatest rivers of known experience and extends beyond them to rivers that have passed into obscurity. The created world was larger than what history has preserved of it.

After the fall, no human being has ever returned to access these specific rivers from Eden's source. The geography of Genesis 2 is the geography of the unfallen world, now inaccessible. Attempts to identify the garden's location are exercises in reasoning backward from rivers that no longer connect to their original source. The geography is real, but the access is barred. The cherubim of 3:24 guard what the four-river description has made concrete and specific.