“King Amaziah son of King Joash of Judah lived fifteen years after the death of King Joash son of King Jehoahaz of Israel. Now the rest of the deeds of King Amaziah, are they not written in the Book of the Annals of the Kings of Judah? They made a conspiracy against him in Jerusalem. He fled to Lachish. But they sent after him to Lachish. They killed him there. Then they brought him back on horses. He was buried in Jerusalem with his ancestors in the city of David. All the people of Judah took Azariah, who was sixteen years old. They made him king to succeed his father King Amaziah. He built Elath and restored it to Judah, after King Amaziah slept with his ancestors.”
Once again we have the confusion of names. The father of King Amaziah was King Joash of Judah, while King Joash of Israel was the king who he fought with and lost. Of course, if you want more information, check with the lost “Book of the Annals of the Kings of Judah.” I am actually surprised that the kingship still existed in Judah after the defeat by King Joash of Israel. This was the same with King Jehu, who killed the king of Judah also in chapter 9. The northern kings seem to step back after almost annihilating Judah and its kings. King Amaziah seems to have outlived King Joash until some kind of conspiracy rose up against him. They killed him in Lachish, which is southwest of Jerusalem. They actually may have been the children whose fathers King Amaziah had killed at the beginning of his reign. However, they brought back his body to bury him in Jerusalem with his ancestors. In another play on words, Azariah succeeded Amaziah to become king. You had to be careful with your consonants. King Azariah conquered Elath, which was near the Red Sea.