Mythology Vs Heresy

Thor: So, what did you think of The First Book of Swords?
Rex: Author Fred Saberhagen introduces us to the mythical god Vulcan, who fashions twelve swords with the aid of Humans. Many years later, we meet two people who have found or inherited these swords. There's an evil Duke who has stolen another, and wishes to take all the others by force. But then, before fighting off the evil Duke, the protagonists swap their swords.
Thor: That sounds like an odd strategy.
Rex: That's what I thought. It's as if you voluntarily swapped your hammer with Jane Foster, and started using a sword instead.
Thor: I would never do that.
Rex: But you did. In the recent comics--
Thor: I would never do that! If the comics say otherwise, they're heresy! 
Rex: Actually, the comics don't say you willingly laid down Mjolnir. They claim your hammer abandoned you, because you were no longer worthy to wield it.
Thor: Thor no longer worthy? Heresy!! Thor Dalek will exterminate all heresy! Anyone who reads comics claiming Thor is not worthy will also be exterminated! Exterminate Heresy! Exterminate Heretics!! EXTERMINATE ALL SOURCES OF HERESY!!!