I say, ask a fundamentalist “Would you kill me if god told you to?” they always try to dodge the question. It puts their belief face to face with the morality most humans have within their core. They’re forced into the uncomfortable position to either say they would kill you if they believe god told them to which is sociopathic, or to admit that they have a sense of morality independent from The atheist agenda their religion.
https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/111/693/849/289/893/524/original/956b722f85065d93.png