9.
“Ahaziah the son of Ahab began to reign over Israel in Samaria the seventeenth year of Jehoshaphat king of Judah, and reigned two years over Israel” (1 Kings, xxii, 51).
If Ahaziah began to reign in the seventeenth year of Jehoshaphat and reigned two years before he died, he died in the nineteenth year of Jehoshaphat’s reign. As Jehoshaphat reigned twenty-five years, he therefore died six years after Ahaziah died.