John (possessed by the yellow-eyed demon), Dean and others in “Unfinished Business”

He's gonna taste the iron in your blood.

Dean

Let him go, or I swear to God...

What? What are you and God gonna do? You see as far as I'm concerned, this is justice. You know that little exorcism of yours? That was my daughter.

Dean

Who, Meg?

The one in the alley? That was my boy. You understand?

Dean

You've got to be kidding me.

What? You the only one that can have a family? You destroyed my children. How would you feel if I killed your family? Oh, that's right, I forgot I did. Still, two wrongs don't make a right.

Dean

You son of a bitch.

Sam

I wanna know why. Why'd you do it?

You mean why'd I kill Mommy and pretty little Jess?

Sam

Yeah.

[to Dean] You know I never told you this, but Sam was going to ask her to marry him. Been shopping for rings and everything. You wanna know why? Because they got in the way.

Sam

In the way of what?

My plans for you, Sammy — you, and all the children like you.

Dean

Listen, you mind just getting this over with, because I really can't stand the monologuing.

Funny. But that's all part of your M.O., isn't it? Mask all that nasty pain, mask the truth.

Dean

Oh, yeah? What's that?

You know you fight, and you fight for this family — but the truth is, they don't need you, not like you need them. Sam, he's clearly John's favorite. Even when they fight, it's more concern than he's ever shown you.

Dean

I bet you're real proud of your kids, too, huh? Oh wait, I forgot, I wasted them.