Stargate SG-1, Season 1

Teal'c:
I will pledge my allegiance to this world.

Col. O'Neill:
I'm just not sure that's ever going to be enough for them to trust you. To be honest with you, I think they're scared of you.

Teal'c:
I understand.

Col. O'Neill:
You must be used to that by now, huh?

Teal'c:
I am a Jaffa. I have served as a warrior for your enemy. I have carried your enemy within me.

Col. O'Neill:
Yeah. Well it's kind of a human thing. We tend to be afraid of things we don't know.

Teal'c:
Why is O'Neill not afraid?

Col. O'Neill:
Teal'c, I saw you stand up to a god. Refuse to kill. I saw you make that decision.

Teal'c:
Yes.

Col. O'Neill:
In that moment I learned everything I needed to know to trust you.