Babylon 5, Season 2: The Coming of Shadows

[after Delenn offers to sacrifice herself for Sheridan, who's being tortured by Sebastian]

Sebastian:
You can go. You've passed, both of you.

Delenn:
Passed what?

Sebastian:
How do you know the Chosen Ones? "No greater love hath a man than he lay down his life for his brother." Not for millions…not for glory…not for fame. For one person, in the dark, where no one will ever know or see. I have been in the service of the Vorlons for centuries, looking for you. Diogenes with his lamp, looking for an honest man willing to die for all the wrong reasons. At last, my job is finished. Yours is just beginning. When the darkness comes, know this: You are the right people, in the right place, at the right time.