1 Kings 22:51

Ahaziah Reigns in Israel

51Ahaziah the son of Ahab abegan to reign over Israel in Samaria in the seventeenth year of Jehoshaphat king of Judah, and he reigned two years over Israel.

2 Kings 3:1

Moab Rebels Against Israel

1 bIn the eighteenth year of Jehoshaphat king of Judah, Jehoram the son of Ahab became king over Israel in Samaria, and he reigned twelve years.

2 Kings 8:16-17

Jehoram Reigns in Judah

16In the fifth year of cJoram the son of Ahab, king of Israel, when Jehoshaphat was king of Judah,
Septuagint, Syriac lack  when Jehoshaphat was king of Judah
Jehoram the son of Jehoshaphat, king of Judah, began to reign.
17He was ethirty-two years old when he became king, and he reigned eight years in Jerusalem.
Copyright information for ESV