Their idea of "martyrdom" is killing people who disagree with them. Not, "it can be ok to kill people who disagree with you once it reaches the point of war," but, "these people's forebears didn't listen to our god, so we must always hunt them, and also the jews."

IF(highest sacrifice in your cult is dying while trying to kill those who disagree with you because of same) THEN (you are in a death cult)