יחזקאל, פרק מ״ז, פסוק כ׳

The western boundary of the Land of Israel forms a clear, absolute line defined by the Mediterranean Sea. The territory of the sea itself is considered part of the land [מצודת דוד]. The boundary begins exactly at the endpoint of the southern border, located at the River of Egypt [רש״י, מלבי״ם, ביאור שטיינזלץ]. From this southwestern point, the border runs straight north along the coastline.

The line continues northward until it reaches a point directly facing the entrance to the city of Hamath [רד״ק, מצודת ציון, ביאור שטיינזלץ]. This destination marks the northwestern corner of the land, specifically identified as Mount Hor. Mount Hor stands directly across from the road leading to Hamath, aligning perfectly with the original borders outlined in the Torah [רש״י, מצודת דוד]. The entire distance from the southern edge up to the area facing Hamath defines the total span of this western coastal border [רד״ק].

The conclusion of the boundary description highlights its unique geographical nature. Unlike the eastern border, which has the potential to be expanded, the western boundary is absolute and final. The Mediterranean Sea serves as a permanent, natural barrier, meaning the territory cannot be extended any further beyond it [מלבי״ם].