Literary characters familiar to high school students—like Huckleberry Finn, Holden Caulfield, and Anna Karenina—may have to make room for Cain and Abel.

Next year, some public school students in Texas will learn about the Bible and its history through a new statewide elective course.

The course itself, already a reality in dozens of Texas schools, is not a point of contention for concerned parents and education officials. Instead, they argue that the class’s curriculum could be too broad.

Although the bill that allowed for the elective course also called for a specific curriculum, the State Board of Education voted on Friday to apply standard English and social studies guidelines, says the Houston Chronicle.

This lack of regulation drew skepticism from those who feel Texas may be blurring the line between church and state.

The Houston Chronicle story on the subject has generated 125 comments since Friday, some of which advocate for an objective course that encompasses education about many different religions.

When it comes to the Bible, there’s a thin line between studying a text and endorsing a religion. And not crossing that line requires intense oversight.

Stacey Hollenbeck, spring intern