You don't trust him. Quickly and forcefully you grab his left arm
with your right hand, and twist it around his back, and you snatch his
knife with your left hand and you bring it up to his neck. "You really
think I'm that stupid?" Still in shock of what you just did he answers.
You hear the fear in his words, "Of course not, that's why you must trust
me. You have the sight look into my eyes and see the truth."