בראשית, פרק י״ד, פסוק ג׳

A strategic military alliance forms the backdrop of this regional conflict, as five local kings of the Jordan plain join forces to rebel against the Mesopotamian superpowers. Setting aside any previous disputes, the local rulers formed a peace treaty and united their armies for the upcoming campaign [ספורנו, מלבי״ם, ביאור שטיינזלץ]. This gathering was strictly a cooperative alliance rather than a hostile confrontation among themselves [רש ר הירש, חזקוני]. Detailing this massive united front serves a greater narrative purpose: it highlights the magnitude of the miracle that will soon occur for Abraham. He will single-handedly defeat the very foreign empires that these five combined kings could not overcome [העמק דבר, ביאור יש״ר].

The coalition assembled in a specific valley [רד״ק]. This was not a random meeting point, but a carefully selected battlefield. The local kings hoped their deep familiarity with the complex terrain would provide a tactical advantage against a vastly superior enemy force [רש ר הירש]. The primary approach among commentators is that the valley was a highly fertile area, filled with plowed agricultural fields. However, another perspective suggests its name relates to lime, pointing to a landscape heavily marked by mining pits for clay and building materials. This explains the treacherous and uneven ground the armies would soon navigate during the war [אבן עזרא, מלבי״ם, ביאור יש״ר, רש ר הירש, מחוקקי יהודה].

Over time, this location underwent a dramatic geographical transformation. At the time of the battle, it was a dry, blooming valley, but it eventually became the salty body of water known today as the Dead Sea, which forms a border of the land of Israel [רד״ק, שד״ל, מלבי״ם, ביאור שטיינזלץ]. Opinions vary on how this valley turned into a sea. Some suggest that seawater simply flowed into the basin naturally [רש״י, מזרחי]. Others describe a catastrophic punishment where the surrounding rocks violently split open, releasing streams of saltwater that completely flooded the region [רש״י, גור אריה, לבוש האורה, ברכת אשר, ביאור יש״ר]. A minority view proposes that the valley never actually turned into a sea, but was simply located right next to it, or served as an area where seawater was evaporated to harvest salt [רד״ק, רלב״ג].