2 Kings 1:17

And he will die according to the word of Jehovah which Elijah spoke. And Jehoram will reign in his stead in the second year to Jehoram son of Jehoshaphat, king of Judah; for there was no son to him.

2 Kings 3:1

And Jehoram son of Ahab reigned over Israel in Shomeron in the eighteenth year to Jehoshaphat king of Judah, and he will reign twelve years

1 Kings 22:51

And Ahaziah son of Ahab reigned over Israel in Shomeron in the seventeenth year to Jehoshaphat king of Judah; and he will reign over Israel two years

2 Kings 8:16-17

And the fifth year to Jerson son of Ahab king of Israel, and Jehoshaphat king of Judah, Jehoram son of Jehoshaphat king of Judah, reigned.

Treasury of Scripture Knowledge

Summary

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.

Bible References

In the second

2 Kings 3:1
And Jehoram son of Ahab reigned over Israel in Shomeron in the eighteenth year to Jehoshaphat king of Judah, and he will reign twelve years
2 Kings 8:16
And the fifth year to Jerson son of Ahab king of Israel, and Jehoshaphat king of Judah, Jehoram son of Jehoshaphat king of Judah, reigned.
1 Kings 22:51
And Ahaziah son of Ahab reigned over Israel in Shomeron in the seventeenth year to Jehoshaphat king of Judah; and he will reign over Israel two years