In the twelfth year of Israel's King Joram son of Ahab, Ahaziah son of Jehoram became king of Judah.
References for 2 Kings 8:25
Ahaziah was 22 years old when he became king; he reigned one year in Jerusalem. His mother's name was Athaliah, granddaughter of Israel's King Omri.
He walked in the way of the house of Ahab and did what was evil in the Lord's sight like the house of Ahab, for he was a son-in-law to Ahab's family.
Ahaziah went with Joram son of Ahab to fight against Hazael king of Aram in Ramoth-gilead, and the Arameans wounded Joram.
So King Joram returned to Jezreel to recover from the wounds that the Arameans had inflicted on him in Ramoth-gilead when he fought against Aram's King Hazael. Then Judah's King Ahaziah son of Jehoram went down to Jezreel to visit Joram son of Ahab since Joram was ill.
References for 2 Kings 8:29