Dean and Castiel in “Unfinished Business”

Dean

God?

Castiel

Yes.

Dean

God.

Castiel

Yes. He isn't in Heaven, He has to be somewhere.

Dean

Try New Mexico, I hear He's on a tortilla.

Castiel

No, He's not on any flatbread.

Dean

Listen, chuckles, even if there is a God, He is either dead, and that's the generous theory-

Castiel

He is out there, Dean.

Dean

...or, He's up and kicking and doesn't give a rat's ass about any of us. I mean, look around you, man; the world is in the toilet! We are literally at the end of days here, and He's off somewhere drinking booze out of a coconut. Alright?

Castiel

Enough. This is not a theological issue; it's strategic. With God's help, we can win.

Dean

It's a pipe-dream, Cas.

Castiel

[angrily] I killed two angels this week. That's my brothers. I'm hunted, I have rebelled, and I did it - all of it - for you. And you failed. You and your brother destroyed the world. And I lost everything, for nothing. So keep your opinions to yourself.