In this play Electra actually assists her brother in his deed of vengeance. For this co-operation she is sentenced to exile by Castor and Pollux,[29] but we are prevented from regarding the penalty as severe by the further decree that she must become the wife of Pylades![30] It is true that Pylades was absent from the actual slaying of Clytaemnestra, but a short time previously he was present at the death of Aegisthus,[31] although he took no actual part in the slaying. From the standpoint of historical Attic law, he was therefore as guilty (or as innocent) as Orestes and Electra were. Hence this decree of Castor and Pollux must be interpreted prophetically; they are speaking of the future, which, as gods, they foresee. Therefore they regard the exile of Electra as temporary and her guilt as that of extenuated matricide. That the death of Clytaemnestra and Aegisthus involved their slayers in some degree of guilt, in the opinion of Castor and Pollux, is obviously suggested by the penalties which they impose. They say to Orestes[32]:
With justice vengeance falls
On her: in thee unholy is the deed.
Such sentiments can only be rendered intelligible by assuming the existence of what we have described[33] as the second Attic legend, which conceived Orestes and his friends as guilty of quasi-involuntary homicide. Castor and Pollux are compelled by their foreknowledge of destiny to believe that, some day, a court will declare the act of Orestes to have been either justifiable or extenuated; that Court they know will be the Athenian Areopagus. They cannot understand, perhaps, why the court should be Athenian, but they know it must be so! From a legal point of view, nothing could be more strange than their decree that Orestes, pending his acquittal at the Areopagus, must leave his native Argos. In historical Greece an accused kin-slayer awaiting trial would only have been debarred from the temples and the public places of his own State; he would have been tried before a court of his own State. He would not have been tried by a foreign court unless he fled from his own State and sought permission to reside in a foreign State. Hence to command Orestes to leave Argos until he was tried at Athens is legally absurd. The only explanation which we can offer for such an absurdity is that Euripides is following either two separate legends or a fusion of two legends, and that he uses the dramatic device of the deus ex machina to remove, or rather to obscure, the inconsistency and the confusion.
Again, it is strange that, in this play, Castor and Pollux, who, as divine kinsmen of the slain Clytaemnestra, should appear in a diabolical implacable rôle clamouring for blood, content themselves with the promulgation of Apolline decrees which they do not profess to understand. We can only explain this fact by supposing that in the story of Orestes, as it evolved in post-Homeric times, the influence of Apollo, the pioneer Interpreter and Purifier, was so great that no respectable local gods could resist his decrees; and it devolved upon the quasi-diabolical Titanic Erinnyes to unfurl the standard of revolt.
Castor and Pollux proclaim that, at Athens, Apollo will take upon himself the guilt of having commanded the deed[34]:
For the blame
Apollo on himself will charge, whose voice
Ordained thy mother’s death.