2 Kings 3:1

Now, Jehoram son of Ahab, began to reign over Israel, in Samaria, in the eighteenth year of Jehoshaphat, king of Judah, - and he reigned twelve years.

2 Kings 1:17

And he died, according to the word of Yahweh which, Elijah, had spoken, and Jehoram reigned in his stead, in the second year of Jehoram son of Jehoshaphat king of Judah, - because he had no son.

1 Kings 22:51

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

2 Kings 8:16

Now, in the fifth year of Joram son of Ahab, king of Israel, Jehoshaphat, having been king of Judah, Jehoram, son of Jehoshaphat king of Judah, began to reign.

Treasury of Scripture Knowledge

Summary

Now Jehoram the son of Ahab began to reign over Israel in Samaria the eighteenth year of Jehoshaphat king of Judah, and reigned twelve years.

Bible References

Jehoram

2 Kings 1:17
And he died, according to the word of Yahweh which, Elijah, had spoken, and Jehoram reigned in his stead, in the second year of Jehoram son of Jehoshaphat king of Judah, - because he had no son.
2 Kings 8:16
Now, in the fifth year of Joram son of Ahab, king of Israel, Jehoshaphat, having been king of Judah, Jehoram, son of Jehoshaphat king of Judah, began to reign.