25 In the twelfth year of Joram the son of Ahab king of Israel did Ahaziah the son of Jehoram king of Judah begin to reign.
2 Kings 8:25 Cross References - KJV
2 Kings 8:16-17
2 Kings 9:29
29 And in the eleventh year of Joram the son of Ahab began Ahaziah to reign over Judah.
2 Chronicles 21:20-22:6
20 Thirty and two years old was he when he began to reign, and he reigned in Jerusalem eight years, and departed without being desired. Howbeit they buried him in the city of David, but not in the sepulchres of the kings.