What does 2 Chronicles 24:23 mean?

At the turn of the year, the Syrian army came up against Joash. They invaded Judah and Jerusalem, killed all the leaders, and sent all the loot to their king in Damascus. 2 Chronicles 24:23 - Modern Text Bible

(God allowed a foreign army to attack as judgment. The leaders who had led the people astray were killed, and the nation's wealth was taken.)