'Traitor' in the Bible

A dire vision has been announced to me: the traitor betrays, and the plunderer takes loot. Get up, Elam! Attack, Media! I am putting a stop to all the groaning she has caused.

"How terrible it will be for you, destroyer, you who have not been destroyed yourself! And how terrible it will be for you, traitor, one whom people have not betrayed! When you have sunk so low in destroying others, you will be destroyed; and when you have finished betraying, they will betray you."