Now in that battle Ogma the champion found Orna, the sword of Tethra, king of the Fomoire. Ogma unsheathed the sword and cleaned it. Then the sword told what had been done by it, because it was the habit of swords at that time to recount the deeds that had been done by them whenever they were unsheathed. And for that reason swords are entitled to the tribute of cleaning after they have been unsheathed. Moreover spells have been kept in swords from that time on. Now the reason why demons used to speak from weapons then is that weapons used to be worshipped by men and were among the sureties of that time.
"Dost thou wish to drink my life-blood,
Thus his trusty sword makes answer,
Well divining his intentions:
"Why should I not drink thy life-blood,
Blood of guilty Kullervo,
Drink the life-blood of the righteous?"
—The Kalevala, Canto XXXVI: The Victory and Death of Kullervo
"Hello. Would you like to kill someone today?"
—Nightblood, Warbreaker
