The fanfiction where Harry Potter is a devout christian boy going to a prayer-school in the US.
https://www.fanfiction.net/s/10644439/1/Hogwarts-School-of-Prayer-and-Miracles
Where aunt Petunia tries to pervert innocent little Harry with "science and socialism and birthdays".
Where Hagrid is a door-to-door preacher.
Where Harry Potter joins the "Hogwarts School of Prayers and Miracles" and can instantly quote the Bible despite never even having heard of Christianity prior.
Where Dumbledore is a young pastor, dresses like a cowboy and is married to McGonnagal.
Where Hermione is an obedient little girl trying to impress others with her housewife-skills.
Where it's okay to discrminate against other Christians for being the wrong kind of Christian.
Where Voldemort is a Congressman trying to pass legislation that would encroach on religious freedom.
Disclaimer: The internet has been discussing whether this was actually written by a religious mom or whether it's satire. Nobody knows.