Phats just use the bible and concentrate on the love parts and all who believe in Christ are saved. There a ton of scriptures stating that if you believe or just support Christians your saved and even gods sons. Show also all the parts about how it's all about love with Jesus and to even love your enemies.
I think if this can be shown this will go along way. People in general don't want to think of thier fellow man in the negative light the cult put them in.