“Now the rest of the acts of King Joash, and all that he did, are they not written in the Book of the Annals of the Kings of Judah? His servants arose, devised a conspiracy, and killed King Joash in the house of Millo, on the way that goes down to Silla. It was Jozacar son of Shimeath and Jehozabad son of Shomer, his servants, who struck him down, so that he died. They buried him with his ancestors in the city of David. Then his son King Amaziah succeeded him.”
Once again, if you want more information about King Joash, the lost “Book of the Annals of the Kings of Judah” would be helpful. King Joash met a tragic end. Without giving any details, his servants rose up against him, led by Jozacar, and killed him. This is a little strange. However, his son Amaziah became the king. King Joash was killed at the Millo or fortress that goes to Silla. This is the only mention of Silla. The Millo was built by King Solomon. This is also the only mention in biblical literature of this Jozacar, who led the revolt. However, they buried him in Jerusalem with his ancestors. His son King Amaziah took over after him, so this was not a dynasty revolution, put a personal one. Apparently, he was more like his grandmother, Queen Athaliah, than his priestly mentor Jehoiada. Perhaps, they were mad that King Joash had not fought against King Hazael of Aram and gave away so many royal and temple treasures.