After you hear and listen. First must come desire. Second must come willingness. Third should come understanding. Fourth should come progression and with progression will come more understanding.
Imagine the people who believe such things and who are not ashamed to ignore, totally, all the patient findings of thinking minds through all the centuries since the Bible was written. And it is these ignorant people, the most uneducated, the most unimaginative, the most unthinking among us, who would make themselves the guides and leaders of us all; who would force their feeble and childish beliefs on us; who would invade our schools and libraries and homes. I personally resent it bitterly.
People don't want children to know what they need to know. They want their kids to know what they ought to need to know. If you're a teacher you're in a constant battle with mildly deluded adults who think the world will get better if you imagine it is better. You want to teach about sex? Fine, but only when they're old enough to do it. You want to talk politics? Sure, but nothing modern. Religion? So long as you don't actually think about it. Otherwise some furious mob will come to your house and burn you for a witch.