An international clash of empires pulls the Kingdom of Judah into a fateful military campaign that ends in national disaster. The King of Egypt initiates a rare offensive against the Assyrian Empire in the north, directing his forces toward the area of the Euphrates River [מצודת ציון]. The campaign is led by Pharaoh Necho. The name Necho implies a broken state, indicating that the Egyptian king was crippled in his legs [מצודת ציון, רד״ק].
As the Egyptian army passes through the borders of the land, King Josiah of Judah goes out to meet them, intending to fight and block their passage [מצודת דוד, רד״ק, ביאור שטיינזלץ]. This decision is surprising because Pharaoh had sent a peaceful message to Josiah, clarifying that his target was only his enemy in Assyria and that he had no desire for war with Judah.
Despite the peaceful assurance, Josiah ignores the warning. His motivation stems from a promise in the Torah that no sword will pass through the land. Josiah interprets this strictly, believing it forbids the passage of any foreign military force, even one on a peaceful mission. He acts in good faith, confident that the nation is fulfilling the will of God. Tragically, he is entirely unaware that the people of his generation are secretly worshiping idols [רד״ק].
The confrontation in the valley of Megiddo ends with Josiah's death. The encounter unfolds as a direct, face-to-face clash in battle [מצודת דוד]. A complementary perspective suggests that the moment Pharaoh sees Josiah disguised and dressed in armor, he realizes the Judean king's intent to fight and immediately orders his death [רד״ק, ביאור שטיינזלץ].
Josiah's death is understood in two distinct ways. It is viewed as a punishment for ignoring Pharaoh's warning, which was actually a divine message spoken by the prophet Jeremiah, or perhaps a warning given in the name of the Egyptian god [רד״ק]. Conversely, his early passing is seen as an act of divine kindness. God had promised Josiah that he would not live to see the future disaster destined for Judah, allowing him to pass away before the national destruction began [מלבי״ם].
Ultimately, God does not leave the death of the Judean king unanswered. Pharaoh Necho continues his northern campaign and lays siege to the region of Carchemish for a long period. However, King Nebuchadnezzar of Babylon eventually attacks and defeats the Egyptian army. This devastating blow against Egypt is considered divine revenge for the tragic death of Josiah [רד״ק].