2 Kings 8:25

The twelfth year of Jehoram son of Ahab, king of Israel, did Ahaziah the son of Jehoram king of Judah begin to reign.

2 Kings 9:29

Ahaziah reigned over Judah in the eleventh year of Jehoram son of Ahab.

2 Kings 8:16-17

The fifth year of Jehoram son of Ahab king of Israel, Jehoshaphat being yet king of Judah, Jehoram the son of Jehoshaphat, king of Judah, began to reign.

2 Chronicles 21:20-6

When he began to reign, he was twenty seven years old, and reigned in Jerusalem eight years. And he walked not pleasantly and they buried him in the city of David: but not in the sepulchre of the kings.

Treasury of Scripture Knowledge

Summary

In the twelfth year of Joram the son of Ahab king of Israel did Ahaziah the son of Jehoram king of Judah begin to reign.

Bible References

General references

2 Kings 8:16
The fifth year of Jehoram son of Ahab king of Israel, Jehoshaphat being yet king of Judah, Jehoram the son of Jehoshaphat, king of Judah, began to reign.
2 Kings 9:29
Ahaziah reigned over Judah in the eleventh year of Jehoram son of Ahab.
2 Chronicles 21:20
When he began to reign, he was twenty seven years old, and reigned in Jerusalem eight years. And he walked not pleasantly and they buried him in the city of David: but not in the sepulchre of the kings.