“No, he focused on the one thing that he knew would keep him grounded the way the demon said he'd need to be. "Take your brother outside as fast as you can - don't look back. Now, Dean, go!" Sam's not dying. Not on my watch. You protect your family no matter what. I'm coming for you, Sammy. Just hold tight. And don't look back. He opened his eyes. Behind him, he could hear Kat's voice muttering an incantation in a language he didn't recognize. It wasn't Latin, certainly. Since it was demon magic, it was probably some language that was even more dead than Latin. The chanting stopped. Dean screamed.”
Book:Bone Key