FORT WORTH — The pastor was already pacing when he gave the first signal. Then he gave another, and another, until a giant video screen behind him was lit up with an enormous colored map of Fort Worth divided into four quadrants.

Greed, the map read over the west side. Competition, it said over the east side. Rebellion, it said over the north part of the city. Lust, it said over the south.

It was an hour and a half into the 11 a.m. service of a church that represents a rapidly growing kind of Christianity in the United States, one whose goal includes bringing under the authority of a biblical God every facet of life, from schools to city halls to Washington, where the pastor had traveled a month after the Jan. 6 insurrection and filmed himself in front of the U.S. Capitol saying quietly, “Father, we declare America is yours.”

Now he stood in front of the glowing map, a 38-year-old White man in skinny jeans telling a congregation of some 1,500 people what he said the Lord had told him: that Fort Worth was in thrall to four “high-ranking demonic forces.” That all of America was in the grip of “an anti-Christ spirit.” That the Lord had told him that 2021 was going to be the “Year of the Supernatural,” a time when believers would rise up and wage “spiritual warfare” to advance God’s Kingdom, which was one reason for the bright-red T-shirt he was wearing. It bore the name of a church elder who was running for mayor of Fort Worth. And when the pastor cued the band, the candidate, a Guatemalan American businessman, stood along with the rest of the congregation as spotlights flashed on faces that were young and old, rich and poor, White and various shades of Brown — a church that had grown so large since its founding in 2019 that there were now three services every Sunday totaling some 4,500 people, a growing Saturday service in Spanish and plans for expansion to other parts of the country.

“Say, ‘Cleanse me,’ ” the pastor continued as drums began pounding and the people repeated his words. “Say, ‘Speak, Lord, your servants are listening.’ ”

***

The church is called Mercy Culture, and it is part of a growing Christian movement that is nondenominational, openly political and has become an engine of former president Donald Trump’s Republican Party. It includes some of the largest congregations in the nation, housed in the husks of old Baptist churches, former big-box stores and sprawling multimillion-dollar buildings with private security to direct traffic on Sundays. Its most successful leaders are considered apostles and prophets, including some with followings in the hundreds of thousands, publishing empires, TV shows, vast prayer networks, podcasts, spiritual academies, and branding in the form of T-shirts, bumper stickers and even flags. It is a world in which demons are real, miracles are real, and the ultimate mission is not just transforming individual lives but also turning civilization itself into their version of God’s Kingdom: one with two genders, no abortion, a free-market economy, Bible-based education, church-based social programs and laws such as the ones curtailing LGBTQ rights now moving through statehouses around the country.

This is the world of Trump’s spiritual adviser Paula White and many more lesser-known but influential religious leaders who prophesied that Trump would win the election and helped organize nationwide prayer rallies in the days before the Jan. 6 insurrection, speaking of an imminent “heavenly strike” and “a Christian populist uprising,” leading many who stormed the Capitol to believe they were taking back the country for God.

Even as mainline Protestant and evangelical denominations continue an overall decline in numbers in a changing America, nondenominational congregations have surged from being virtually nonexistent in the 1980s to accounting for roughly 1 in 10 Americans in 2020, according to long-term academic surveys of religious affiliation. Church leaders tend to attribute the growth to the power of an uncompromised Christianity. Experts seeking a more historical understanding point to a relatively recent development called the New Apostolic Reformation, or NAR.

A California-based theologian coined the phrase in the 1990s to describe what he said he had seen as a missionary in Latin America — vast church growth, miracles, and modern-day prophets and apostles endowed with special powers to fight demonic forces. He and others promoted new church models using sociological principles to attract members. They also began advancing a set of beliefs called dominionism, which holds that God commands Christians to assert authority over the “seven mountains” of life — family, religion, education, economy, arts, media and government — after which time Jesus Christ will return and God will reign for eternity.

None of which is new, exactly. Strains of this thinking formed the basis of the Christian right in the 1970s and have fueled the GOP for decades.

What is new is the degree to which Trump elevated a fresh network of NAR-style leaders who in turn elevated him as God’s chosen president, a fusion that has secured the movement as a grass-roots force within the GOP just as the old Christian right is waning. Increasingly, this is the world that the term “evangelical voter” refers to — not white-haired Southern Baptists in wooden pews but the comparatively younger, more diverse, more extreme world of millions drawn to leaders who believe they are igniting a new Great Awakening in America, one whose epicenter is Texas.

That is where the pastor wearing the bright-red T-shirt, Landon Schott, had been on the third day of a 40-day fast when he said the Lord told him something he found especially interesting.

It was 2017, and he was walking the streets of downtown Fort Worth asking God to make him a “spiritual father” of the city when he heard God say no. What he needed was “spiritual authority,” he remembered God telling him, and the way to get that was to seek the blessing of a pastor named Robert Morris, an evangelical adviser to Trump, and the founder of one of the largest church networks in the nation, called Gateway, with nine branches and weekly attendance in the tens of thousands, including some of the wealthiest businessmen in Texas.

Morris blessed him. Not long after that, a bank blessed him with the funds to purchase an aging church called Calvary Cathedral International, a polygonal structure with a tall white steeple visible from Interstate 35. Soon, the old red carpet was being ripped up. The old wooden pews were being hauled out. The cross on the stage was removed, and in came a huge screen, black and white paint, speakers, lights and modern chandeliers as the new church called Mercy Culture was born.

“Mercy” for undeserved grace.

“Culture” for the world they wanted to create.