Worried about global warming, a growing number of churches and other faith groups are divesting their holdings in fossil-fuel companies, which release large amounts of carbon dioxide and other greenhouse gases into the atmosphere.

“The warning in Scripture that ‘the wages of sin is death’ could not be more literally true than it is in the case of fossil fuels,” said Serene Jones, president of New York’s Union Theological Seminary, whose board voted in June to divest its $108.4 million endowment of holdings in fossil-fuel companies.

“While we realize that our endowment alone will hardly cause the fossil-fuel giants to miss even half a heartbeat,” Jones said, “as a seminary dedicated to social justice, we have a critical call to live out our values in the world. Climate change poses a catastrophic threat, and as stewards of God’s creation, we simply must act.”

Other religious institutions that have recently voted to divest fossil-fuel investments include the World Council of Churches (July 10), the Unitarian Universalists (June 28) and the United Church of Christ (July 2013). Many smaller and regional groups — such as the Episcopal Diocese of Massachusetts, the Shalom Center and the Oregon Synod of the Evangelical Lutheran Church in America — have also approved fossil-fuel divestment.

And the General Assembly of the Presbyterian Church (USA) last month voted to study the possibility.

Motivating these faith-based groups is the concern that such investments ally them with companies identified as among the most damaging to the environment.

Many religious supporters of fossil-fuel divestment were further spurred by the National Climate Assessment, a federal report released in May — written with the help of 300 experts and the National Academy of Sciences — that concluded that climate change is proceeding at a faster pace than previously thought. It also placed blame on fossil fuels.

“While scientists continue to refine projections of the future, observations unequivocally show that climate is changing and that the warming of the past 50 years is primarily due to human-induced emissions of heat-trapping gases,” the report reads. “These emissions come mainly from burning coal, oil, and gas, with additional contributions from forest clearing and some agricultural practices.”

The American Petroleum Institute offers a more upbeat view, at odds with the Obama administration and the scientific community.

“The oil and natural gas industry is leading the way in lowering carbon emissions,” said Carlton Carroll, a spokesman for the American Petroleum Institute. “Government experts say that because of plentiful and clean-burning natural gas brought by technological advances, the amount of carbon dioxide being released into the atmosphere in the U.S. has fallen dramatically and is near 20-year lows.”

Many divestment advocates say that only Congress (the United States is one of the largest producers of greenhouse gases) and the international community can impose the restrictions needed to stave off environmental disasters that climate change threatens, including extreme weather and the eradication of species.

But momentum is still building for smaller-scale action in churches and other religious institutions, said Susan Stephenson, executive director of Interfaith Power & Light, a multifaith group fighting global warming.

“People are starting to hear and read about it and they are getting inspired,” Stephenson said of the movement, which has also been embraced by colleges and universities, including Stanford University, which divested its holdings in coal companies in May. “They see that this is a way that they can express their values and really put their money where their hearts are.”

The Unitarian Universalist investment in fossil fuels — less than 3 percent of its $175 million endowment — is typical of religious institutions that have or are considering fossil-fuel divestment: The sum divested is relatively small and unlikely to hurt energy companies’ bottom lines.

Jones talked about her seminary’s fossil-fuel divestment as an act of repentance that may resonate well beyond the school.

“It is on moral grounds that we pursue divestment and on theological grounds that we trust it matters,” she said. “The Christian term for this reckless hope in the power of God to use our decisions of conscience to transform the world is resurrection, and I have faith in the power of resurrection.”

But critics of fossil-fuel divestment, including coal state politicians who have accused the Obama administration of waging a “war on coal,” call it a blunt tool that will damage the economy and hurt the job market.

Worries about the economic effect of a divestment vote don’t seem to dissuade many congregants presented with a fossil-fuel divestment option. Stephenson said those calling for fossil-fuel divestment understand that the industry is a big employer and are encouraging investment in “clean energy,” such as solar and wind power.

“These are jobs that are going to be changing the economy, that are on the economy’s leading edge,” she said. “And it’s very important to help folks who are working in fossil-fuel industries to get retrained.”