3.
“In the thirty and first year of Asa king of Judah began Omri to reign over Israel” (1 Kings xvi, 23).
From the accession of Omri to the death of Ahaziah the reigns of Israel’s kings were: Omri 12 years, Ahab 22 years, and Ahaziah 2 years. 12 years + 22 years + 2 years = 36 years.
As Omri became king in the thirty-first year of Asa’s reign, Asa reigned ten years after Omri became king, and this added to Jehoshaphat’s reign of twenty-five years makes thirty-five years from Omri to the death of Jehoshaphat.
If from the accession of Omri to the death of Ahaziah was thirty-six years, and from the accession of Omri to the death of Jehoshaphat was thirty-five years, Jehoshaphat therefore died one year before Ahaziah died.