Supernatural, Season 4

Zachariah:
Did you see it?

Chuck:
Who are you?

Zachariah:
I'm Zachariah. You may know me from your work.

Chuck:
What do you want?

Zachariah:
Did you see it?

Chuck:
Is it true? Is all of that really going to happen?

Zachariah:
Have you been wrong so far?

Chuck:
I gotta warn Sam and Dean!

Zachariah:
I wouldn't advise it. People shouldn't know too much about their own destiny. You try, and I'll stop you. Where are you going?

Chuck:
To go kill myself.

Zachariah:
Don't be melodramatic, Chuck. We'd only bring you back to life.

Chuck:
What am I supposed to do?

Zachariah:
What you always do. Write.