בראשית, פרק ב׳, פסוק י׳

The irrigation system of the divine garden represents an ideal state of abundance, blessing, and perfection. It was an entirely self-sustaining environment, completely independent of external forces, reflecting a perfect harmony between nature and its spiritual source. A clear distinction exists between Eden and the garden itself: Eden was the hidden, concealed source from which the spring flowed, while the garden was the physical space receiving the water [חוקקי יהודה]. Long before humanity was created, this massive river watered the garden in every direction [אבן עזרא]. This constant flow highlights the flawless nature of the environment, which lacked nothing and required neither rainfall nor human labor to draw water [שד״ל, ספורנו, רד״ק, קאסוטו]. The original river was immense, holding enough water to eventually feed four mighty rivers, and it likely surged from deep within the earth [רס״ג]. Furthermore, this river can be seen as the vital life force for all creation, with the entire world ultimately nourished by the concentrated abundance that first watered the Garden of Eden [תורה תמימה].

The primary approach among commentators is that the river flowed as a single, unified body of water while inside the garden, and only began to divide after exiting its borders [רד״ק, אדרת אליהו, קאסוטו]. Another perspective suggests that rather than one river splitting, multiple streams of water simply flowed out of the garden and naturally separated from one another [ביאור יש״ר]. Regarding the nature of these four new waterways, most scholars understand them as branches. The central river fractured into four major channels, each becoming a significant river in its own right [שד״ל, רד״ק, קאסוטו, שטיינזלץ]. While there may have been other minor offshoots, these four were the largest and most prominent [אדרת אליהו]. Conversely, others propose that these were entirely new beginnings. According to this view, the original river sank into the earth as it left the garden, only to burst forth again as separate springs in four completely different geographic locations [רש ר הירש]. Today, the exact location of the original river remains unknown, likely erased by the massive geographic upheavals caused by the Flood [ביאור יש״ר].

Beyond the physical geography, commentators uncover a deep symbolic layer within the flowing water. The unified river represents pure divine abundance, untainted intellect, or the Torah itself [רלב״ג, אלשיך]. Its division outside the garden mirrors the fracturing of humanity following the first sin and the expulsion from Eden. Mankind split into four primary groups driven by different life pursuits: those chasing wealth and money, those consumed by physical desires, those seeking power and conflict, and a final group dedicating their lives to wisdom and the reverence of God [מלבי״ם, אלשיך]. Viewed through a more positive lens, the four rivers represent the various ways the spiritual reward of the garden extends outward to humanity, adapting to the unique character, actions, and contributions of different individuals in the world [העמק דבר].