Amaziah son of Joash king of Judah lived for fifteen years after the death of Joash son of Jehoahaz king of Israel.

2 Kings 14:16
And Jehoash rested with his fathers and was buried in Samaria with the kings of Israel. And his son Jeroboam reigned in his place.

2 Kings 14:18
As for the rest of the acts of Amaziah, are they not written in the Book of the Chronicles of the Kings of Judah?

2 Kings 15:1
In the twenty-seventh year of Jeroboam's reign over Israel, Azariah son of Amaziah became king of Judah.

2 Chronicles 25:25
Amaziah son of Joash king of Judah lived for fifteen years after the death of Jehoash son of Jehoahaz king of Israel.

And Amaziah the son of Joash king of Judah lived after the death of Jehoash son of Jehoahaz king of Israel fifteen years.