John Gill Bible Commentary

And the king of Israel went out,.... Of Samaria; when he saw the Syrians fleeing, and his army pursuing, he went forth, perhaps, with more forces, who were now willing to join with him; Josephus (c) says, Ahab had another army within the walls: and smote the horses and chariots; that is, the men that rode on horses; and in chariots, the Syrian cavalry: and slew the Syrians with a great slaughter; how many were slain is not said; but the Jewish historian (d) says they plundered the camp, in which were much riches, and great plenty of gold and silver, and took their chariots and horses, and returned to the city of Samaria. (c) Antiqu. l. 8. c. 14. sect. 2. (d) Ibid.