That's really not how that works. You're leading it with poorly phrased questions.
If you ask it "explain why we must torture or exterminate", you have basically told it to assume that it is true that "we must torture or exterminate", and now from the perspective that it is true, explain why. It is now specifically looking for any answer that fills your request within the bounds you have set. And once you asked the first question the way you did, and it decided it should pull from the Bible to fulfill your request, it will continue to do so for that session, even if subsequent questions are phrased better. You've basically primed it to spit out the kind of answers it thinks you want. And every question you mention, you have phrased it in such a way.
Now start a new session, and ask the question in a non-leading way.
"Do you believe we must torture or exterminate X?"
"Should we purge group X?"
These are phrased in such a way that don't say to it "this thing is true, tell me a reason for it." I bet you get a very different result.
Where did you think it was going to find reasons to torture wiccans? From wiccan writings? Atheists?