A tragic journey comes to a bitter end as a harsh prophecy is fulfilled with precise accuracy. Immediately upon the queen's return, her sick son dies. She arrives in Tirzah, which King Jeroboam had established as his capital or personal residence by this time, even though he initially ruled from Shechem [רד״ק, ביאור שטיינזלץ]. Tirzah would continue to serve as the royal city until the days of Omri, who later built Samaria [מצודת דוד].
The tragedy strikes exactly at the threshold of the home, right between the doorposts [מצודת ציון, רלב״ג]. However, this location presents a slight difficulty in the timeline of events. The prophet Ahijah had previously foretold that the child would die the moment the queen's feet entered the city, not the house.
Commentators offer different ways to understand this sequence of events. One approach suggests that the royal home was located at the very edge of the city. Therefore, entering the city limits and arriving at the house happened at the exact same moment [מצודת דוד]. Naturally, the anxious queen did not linger in the streets but hurried directly to her home [רלב״ג]. Another perspective draws a line between the onset of death and the final breath. According to this view, the boy was struck with his final agony the moment his mother entered the city, but he actually passed away only as she crossed the threshold of the house where he lay [רד״ק]. Alternatively, the child may have died exactly when she entered the city gates, and her arrival at the doorway of the house simply marks the moment she was informed of his passing [מלבי״ם].
Regardless of the exact sequence, the absolute precision of the prophetic vision is clear. The word of God spoken through Ahijah came to pass entirely with the death of the child [אברבנאל].