2 Kings 19:37

And it came to pass, as he was worshipping in the house of Nisroch his god, that Adrammelech and Sharezer his sons (y) smote him with the sword: and they escaped into the land of Armenia. And Esarhaddon his son reigned in his stead.

(y) This was the just judgment of God for his blasphemy, that he would be slain before the idol that he preferred to the living God, and by those who should by nature have needed his defence.