Joram turned around and fled, calling out to Ahaziah, “Treachery, Ahaziah!”
From Ramoth-Gilead to Jezreel was more than one day's march; about the mid-way between them the river Jordan must be crossed. We may suppose Jehu to have marched with all possible expedition, and to have taken the utmost precaution to prevent the tidings from getting to Jezreel before him; and, at length, we have him within sight first, and then within reach, of the devoted king. I.
Commenting on 2 Kings 9:16-29
Surely I have seen yesterday the blood of Naboth,.... These are the words of the Lord to Elijah the day after Naboth was put to death: and the blood of his sons, said the Lord; who were put to death with him, that there might be no heirs to the estate: and I will requite thee in this place: take vengeance here, as he now...
There is treachery, O Ahaziah - This was the first intimation he had of it: he feels for the safety of his friend Ahaziah, and now they fly for their lives.