In June, Oklahoma’s Trump-supporting top school official, Ryan Walters, ordered the state’s schools to teach the Bible in class—and this week, his department put in a $3 million proposal to buy 55,000 Bibles for Oklahoma schools. But out of the thousands of versions available for purchase, it seems only two holy books fit the state Department of Education’s strict criteria: one sold by Donald J. Trump, and one sold by his son Don Junior.

Surprise, surprise.

On Friday, the nonprofit news outlet Oklahoma Watch reported that the superintendent’s bid documents included specific standards for the Bibles set to be used in Oklahoma classrooms, standards only met by two editions.

According to the documents, the books must:

Be bound in leather or a leather-like material Include the Pledge of Allegiance, the Declaration of Independence, the Constitution, and the Bill of Rights Be either the old or new version of the King James Bible

Supplier Mardel Christian & Education reportedly searched through the 2,900 versions of the Bible it carries and found that none fit the bill—but Trump’s “God Bless the USA Bible” does.

As we reported earlier this year, Trump began hawking the “God Bless the USA” Bible—about $60 a pop—in March, a month after he started selling his $400 sneakers and other ungodly expensive pieces of merch.

The only other book to fit the bill? The “We The People Bible,” endorsed by Donald Trump Jr., at a price of $90.

Superintendent Ryan Walters’ office stands by the criteria, telling the Hill in a statement, “There are hundreds of Bible publishers, and we expect a robust competition for this proposal.”

The move is unsurprising from Walters’ administration. Last November, the Oklahoma superintendent endorsed Trump, promising that under the ex-president, “This cancer that is the teachers union will be driven out of our schools.” Walters also plans to join the GOP candidate’s reelection team, claiming he’s “excited to see [Trump] dismantle the Department of Education.”

Update, October 4: This story has been updated to credit Oklahoma Watch, which reported the Oklahoman article previously cited.