These two verses (repeated from 2 Kings 13:12-13) are out of place here, where they interrupt the history of Amaziah’s reign.
Related Commentaries of 2 Kings 14:15
2 Kings 14:15-16
15 Now the rest of the acts of Jehoash which he did, and his might, and how he fought with Amaziah king of Judah, are they not written in the book of the chronicles of the kings of Israel?
16 And Jehoash slept with his fathers, and was buried in Samaria with the kings of Israel; and Jeroboam his son reigned in his stead.