What does 2 Chronicles 32:21 mean?

God answered them by sending an angel who wiped out every soldier, leader, and officer in the enemy camp. The king of Assyria had to go home in shame, and when he got to his own temple, some of his own sons killed him there. 2 Chronicles 32:21 - Modern Text Bible

(God intervened directly, destroying the Assyrian army and humiliating their king, who was then murdered by his own family.)