Lost Season 3 Episode 19

Alpert: Ben knew you weren't gonna kill your own father. He put you in front of everyone in our camp just so they could all watch you fail.
Locke: Why?
Alpert: Cause, when word got back here that there was a man with a broken spine on the plane who could suddenly walk again, well, people here began to get very excited because that, that could only happen to someone who was extremely special. But Ben doesn't want anyone to think you're special, John.
Locke: And why are you telling me this?
Alpert: Ben has been wasting our time with novelties like fertility problems. We're looking for someone to remind us that we're here for more important reasons.
Locke: What do you want from me?
Alpert: I want for you to find your purpose. And, to do that, your father has to go, John. And since you're not gonna do it, I'm gonna suggest someone else. (He hands Locke a folder and Locke opens it)
Locke: Sawyer! Why would Sawyer kill my father? He doesn't even know him.
Alpert: Keep reading.