He also walked in the way of the house of Ahab and did what was evil in the sight of the LORD, as the house of Ahab had done, for he was son-in-law to the house of Ahab.
As among common persons there are some that we call little men, who make no figure, are little regarded, as less valued, so among kings there are some whom, in comparison with others, we may call little kings. This Ahaziah was one of these; he looks mean in the history, and in God's account vile, because wicked.
Commenting on 2 Kings 8:25-29
From Ramoth, having taken it, and left his army there: to be healed in Jezreel of the wounds which the Syrians had given him at Ramah; the same with Ramothgilead: when he fought against Hazael king of Syria; for Benhadad being dead, he was now king in his room, Kg2 8:15.
2Ki 8:27 Ahaziah, like his father, reigned in the spirit of Ahab, because he allowed his mother to act as his adviser (2Ch 22:3-4).