The bible doesn't have much in the actual way of positions. This is a favorite rant of Dan McClellan, that the bible (throughout its entire history!) has mostly been used as the proof text to justify the social norms at the time, specifically to preserve hierarchies.

That slaveholders and abolitionists both used the bible to support their positions should be a giveaway. And that slavery is thoroughly discussed as a norm (including lifelong laborers and sex slaves) suggests maybe bronze-age / iron-age social norms shouldn't base how we structure modern society. Especially now that we've imagined the pluralist liberal democracy.

Anyway, it sounds like your parents don't want an open discussion. They want to stay creeped out and uninformed. That may make them too toxic to suffer.

Consider your safety first, of course, but yeah, you may have to set some strong boundaries about how they're allowed to engage you, and be prepared to disengage when they cross any line.