The pope is picking sides in the climate change debate, and the Koch brothers are terrified about what it means for what they worship most: their bottom line.

Recently, the pope has become a beacon of hope for climate change activists. As the New York Times reports, the pope is calling for Catholics and world leaders to take action on human-caused global warming. Unsurprisingly, the Koch brothers aren’t too happy whenever anyone, much less such a prominent figure, wants to take steps that would hurt their profits.

The Heartland Institute, a Chicago-based think-tank that receives funding from the Charles G. Koch Foundation, went to Rome to protest the Vatican’s action on climate change with no luck. In a statement, the president of Heartland, Joseph Bast, said,

“The Holy Father is being misled by ‘experts’ at the United Nations who have proven unworthy of his trust. Though Pope Francis’ heart is surely in the right place, he would do his flock and the world a disservice by putting his moral authority behind the United Nations’ unscientific agenda on the climate.”

This is typical misleading rhetoric from the Kochs and their conservative allies. But when it comes to climate change and competing with the pope, the Kochs are fighting a losing battle.

Pope Francis has the attention of the more than 1.2 billion Catholics worldwide. Fun fact of the day: Each pope gets to chose his name and Pope Francis chose after St. Francis of Assisi, the patron saint of animals and ecology. His focus on climate change is not a whim and will not change because the Kochs are knocking on his door.

The Koch-linked attack on the pope shows the latest salvo to curb the effects of climate change has them worried. The billionaires won’t be able to buy him, or anyone else, off with junk science.