Surely this could backfire in so many hilarious ways?
Teach the parts that conservatives don't do, and teach your class to call out injustice everywhere.
Teach the bible in Aramaic or Ancient Hebrew, and give the kids 30 mins of study time to learn whatever they want from it.
Use it as an exercise to teach that many parts were written thousands of years ago, and doesn't have current medical or societal advancements, so that many parts might be up to interpretation.
Compare it to Islam, Judaism, and other sects of Christianity - and teach that they're basically the same thing and that everyone should get along.
Reference that the pope said years ago that even nonbelievers that led a good life would be offered a seat in heaven, so be nice and it'll all be fine.
You forgot "this is what hard-core Christians believe, this is where it contradicts itself, here are the 10 commandments including love thy neighbor and don't worship false idols".
Oh I don't know that I would make the claim that major world religions are all about people getting along. I'd say we can find some parts that are much less friendly than that.
Why don't we go back to Genesis. Lot is an exciting character, and tells us a lot about God's character. And then it gets creepy too.