Jehoiada's Coup and Joash's Enthronement

"Behold, the king's son shall reign, as the LORD hath said of the sons of David." "But let none come into the house of the LORD, save the priests, and they that minister of the Levites; they shall go in, for they are holy."

"And the Levites shall compass the king round about, every man with his weapons in his hand." "Then they brought out the king's son, and put upon him the crown, and gave him the testimony, and made him king. And Jehoiada and his sons anointed him, and said, God save the king."

Athaliah is taken out and killed at the horse gate. The people break down the house of Baal and kill Mattan. Jehoiada appoints the offices of the temple "by the hand of the priests the Levites, whom David had distributed," and sets gatekeepers "that none which was unclean in any thing should enter in."

Guards or Levites?

In 2 Kings 11 the coup is carried out by the Carites and royal guards. Chronicles makes the Levites the armed force, so that only holy personnel enter the temple. A characteristic Chronicles reshaping.