Great examples of explicit sex in the Bible, and you've barely scratched the surface.
I'm thinking about the school board member in Hernando County, Florida who lost her shit recently over a teacher showing a Disney movie. The board member, who claims, "God appointed me to the board to keep these minorities from infiltrating," says her 10-year-old daughter's "innocence was ripped from her" because a teen boy in the film has a boyfriend.
Now, there's not so much as a chaste kiss or even handholding in the film, but conservative parents in the district are screaming that the film is sexualizing their children.
When people like this talk about sex in books and films, they don't really mean sex. They mean queer people, who in their minds reduce to sex.
Remember the lovely YA novel, "A Fault in Our Stars?"
It's a tender examination of love and premature mortality, a story told through the perspective of a teenage girl with terminal cancer.
The novel is sweet, thoughtful, and highly recommended for teenagers. There is sex in the novel. The girl falls in love with a boy who also has cancer. And they have sex.
You can find this book in every high school library in the United States, pretty much.
What you won't find it on is lists of banned books or list of books targeted for banning.
Because the activists trying to ban "sexually explicit" books are not actually trying to ban books with sex in them. They're trying to ban books about queer people, including but not limited to books about queer people having sex.
Sure, the Bible has plenty of sex. But nobody wants to ban straight sex, and except for a few questionable scenes like King Saul and David, the sex in the Bible is straight.
As you point out, the laws they're vague and arbitrary. Nobody is going to use them to ban the Bible. Few people are going to try to use them to ban books with straight sex.
Judges ought to strike down such vague laws, but there's little chance of that happening. At one time not too long ago, the federal judiciary probably would not have allowed this situation to exist, but the current Supreme Court is so radically conservative that we Americans have an almost no hope for true justice or even rational thinking.