Why According to this passage what evil had Aegisthus committed?

According to the passage, Aegisthus committed the evil act of betraying Agamemnon by seducing his wife, Clytemnestra, and conspiring to murder him upon his return from the Trojan War. This treachery not only led to Agamemnon's death but also disrupted the natural order and justice, as it involved deceit and disloyalty towards a king and husband. Aegisthus's actions are portrayed as morally reprehensible, reflecting themes of betrayal and the consequences of ambition.