2 Kings 3:1

And Jehoram, the son of Ahab, became king over Israel in Samaria in the eighteenth year of the rule of Jehoshaphat, king of Judah; and he was king for twelve years.

2 Kings 1:17

So death came to him, as the Lord had said by the mouth of Elijah. And Jehoram became king in his place in the second year of the rule of Jehoram, son of Jehoshaphat, king of Judah; because he had no son.

1 Kings 22:51

Ahaziah, the son of Ahab, became king over Israel in Samaria in the seventeenth year of the rule of Jehoshaphat, the king of Judah, and he was king over Israel for two years.

2 Kings 8:16

In the fifth year of Joram, the son of Ahab, king of Israel, Jehoram, the son of Jehoshaphat, king of Judah, became king.

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
So death came to him, as the Lord had said by the mouth of Elijah. And Jehoram became king in his place in the second year of the rule of Jehoram, son of Jehoshaphat, king of Judah; because he had no son.
2 Kings 8:16
In the fifth year of Joram, the son of Ahab, king of Israel, Jehoram, the son of Jehoshaphat, king of Judah, became king.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain