Thomas Aquinas

Third, as to the slaying of Sennacherib himself: and it came to pass, as he was worshipping . . . that Adramelech and Sarasar, his firstborn sons, who were envious of their younger brother, who was born of another mother, and whom they wished to supplant. And thus the just shall escape out of distress (Prov 12:13).

Commentary on Isaiah ↗