A dramatic vision of reunification unfolds, depicting the torn kingdoms of Judah and Israel finally coming together under a single leader. This monumental historical moment culminates in an event known as the day of Jezreel.
The primary approach among commentators is that this reunion points to the ultimate ingathering of the exiles during the Messianic era. Historically, during the Second Temple period, only the tribes of Judah and Benjamin returned from Babylon. Therefore, this future vision anticipates a time when the ten tribes exiled by Assyria will join them, merging back into a single, unified nation [רד״ק, מלבי״ם].
As they unite, the nation will appoint one head. Most scholars agree this leader is the Messiah, though opinions vary on his exact identity. Some identify him specifically as King David [רש״י], while others suggest it is the Messiah, son of Joseph, who will guide the people through the initial stages of their redemption [מלבי״ם]. Another perspective views this leader as Elijah the prophet, orchestrating the nation's ascent from exile [רד״ק].
Following this appointment, the people will go up from the land. This is widely understood as a global ascent from the scattered lands of exile back to the Land of Israel. Because the Land of Israel is considered elevated above all other places, traveling there is always described as an ascent, ruling out any interpretation that they are leaving for exile [רד״ק]. Alternatively, this ascent might describe the nation journeying outward from the Land of Israel to conquer the surrounding territories [ביאור שטיינזלץ].
The climax of this process is the great day of Jezreel. The name Jezreel itself merges the concepts of sowing and God [מצודת ציון]. The long exile is compared to the act of planting: God scattered and sowed the nation among the countries of the world [רד״ק, צאינה וראינה]. Just as seeds are buried deep in the earth, appearing to rot before eventually sprouting into a vastly multiplied harvest, the nation was planted in exile specifically to grow and multiply into a massive people. The day of Jezreel is the spectacular moment when the results of this long planting are finally revealed. God will gather His people back to their homeland, accompanied by open miracles [מלבי״ם, רש״י, מצודת דוד, ביאור שטיינזלץ]. The sheer greatness of this day is also tied to the immense duration of the exile, which originally began when the nation's power was broken in the Jezreel Valley [רד״ק].
In stark contrast to this vision of ultimate redemption, a minority viewpoint interprets the entire sequence as a historical tragedy. From this perspective, the gathering of the people refers to the terrifying moment when Sennacherib, the King of Assyria, captured the fortified cities of Judah. In this scenario, the appointed head is none other than Sennacherib himself, and the day of Jezreel represents a day of severe punishment and disaster, echoing the harsh historical defeat that once took place in that valley [אבן עזרא].