“So he died according to the word of the LORD which Elijah had spoken. And Jehoram reigned in his stead in the second year of Jehoram the son of Jehoshaphat king of Judah; because he had no son.”
King James Version (KJV)
1:17 Jehoram - His brother. The son of Jehoshaphat - Jehoshaphat, in his seventeenth year, when he went to Ahab, and with him to Ramoth - Gilead, appointed his son Jehoram his vice - roy, and (in case of his death) his successor. In the second year from that time, when Jehoram was thus made vice - king in his father's stead; this Jehoram, Ahab's son, began to reign: and in the fifth year of the reign of this Jehoram son of Ahab, which was about the twenty - fourth year of Jehoshaphat's reign, Jehoram son of Jehoshaphat was made king of Judah, together with his father.