Albert Barnes Commentary 2 Kings 9:27

"But when Ahaziah the king of Judah saw this, he fled by the way of the garden-house. And Jehu followed after him, and said, Smite him also in the chariot: [and they smote him] at the ascent of Gur, which is by Ibleam. And he fled to Megiddo, and died there." — 2 Kings 9:27 (ASV)

By the way of the garden-house - This may also be translated as “by the way of Beth-Gan,” which has been conjectured to be another name for En-Gannim, meaning “the spring of the gardens.” Both are considered identical with Ginaea, the modern Jenin, which lies due south of Jezreel. The road from Jezreel (Zerin) to Jenin passes at first along the plain of Esdraelon, but after a while begins to rise over the Samaritan hills. Here, probably, was “the ascent of Gur, by Ibleam,” which may have occupied the site of the modern Jelama. Whether the soldiers attacked him there is uncertain. The words, “And they did so,” are not in the original Hebrew text.

Megiddo - Regarding its situation, see the note on Joshua 12:21. For the possible reconciliation of this passage with 2 Chronicles 22:9, see the note on that verse.