GOD DOESN'T NEED OLE ANTHONY.

Ole Anthony is tall and gaunt, with a shock of white hair and searing blue eyes. He has a high, bony forehead and the pale, scraggy features of his Norwegian ancestors (his first name is pronounced "Oh-lee"). His many enemies, most of them televangelists, sometimes call him Ole Antichrist, and it's true that he has a certain familiarity with apocalypse. When he was an intelligence operative with the Air Force, he witnessed a nuclear blast at close range. A few years later, he was accidentally electrocuted. Evangelists often claim that they've been "slain in the spirit"--possessed so completely by the love of Jesus that they've died to themselves--but Anthony, who is sixty-six, really looks as if he'd just stepped off a gurney. He looks the way Moses might have looked had he been born in Minnesota.

Anthony is the founder and president of the Trinity Foundation, a religious community in East Dallas that functions variously as a soup kitchen, a rehab center, a Christian publishing house, and a private detective firm. Trinity's fifty or so active members (supported by some four hundred other donors) live in a row of creaky two-story bungalows with deep, shaded porches, along a dead-end street in a neighborhood known as Little Mexico. They take most of their meals in a communal dining hall and meet three times a week for Bible studies that have been closer in spirit, at times, to barroom brawls. The problem with the modern church, Anthony believes, is the church itself. So he has patterned Trinity on the underground Christian communities of the first century, before denominations or cathedrals or the strict separation of Christian and Jew: a church before churches existed.

The first time I visited, I asked Anthony what drew him to the area. He looked at me as if I had lost my mind. "Nothing," he rasped. In the late nineteen-seventies, when Trinity's first members arrived, there was a flophouse across the street and the neighborhood was ruled by two of the most dangerous gangs in Dallas--the East Side Locos and the A.V. Boys (A.V. stood for "Always Violent"). The place has improved only a little since then. During the day, old women wrapped in shawls sell hot tortillas on the corner, and a man with sunburned skin sits by the highway overpass holding a sign: "Visions of a Cheeseburger." In the evenings, the local toughs drink too much tequila or rum and like to fire their handguns into the air. "They're just fun bullets," one Trinity member told me. "The police don't even bother to investigate anymore." Most members have taken in homeless people for months or even years at a time, and new probationers and petty criminals arrive every week, seeking shelter or performing community service. "You don't come here because you choose to," Anthony said. "You come here because you're desperate."

Yet East Dallas does offer Trinity one distinct advantage: proximity to its targets. Over the past fifteen years, Anthony has waged a guerrilla war against televangelism--"a multibillion-dollar industry," as he describes it, "untaxed and unregulated, that preys on the elderly and the desperate." The United States has an estimated eighty million evangelical Christians, and about twenty-five hundred ministries that broadcast to them over radio and television. Dallas, the buckle of the Bible Belt, is one of their unofficial headquarters. Fifteen miles from Trinity's ramshackle homes, its opposite number, the Trinity Broadcasting Network, owns a gleaming office building that resembles the White House. Since 1973, TBN has created a twenty-four-hour lineup of religious shows that now go out over forty-six satellites to nearly seven thousand television stations worldwide. A few of its most popular ministers, among them local figures such as Benny Hinn and Kenneth Copeland, tend to preach what's known as the "Prosperity Gospel," which promises health and wealth to all true believers and generous donors. Twice a year, TBN hosts "Praise-a-thons," which raise an average of ninety million dollars each.

Anthony calls this the "Gospel of Greed" and has made it his mission to expose its excesses. Six Trinity members are licensed private investigators, and they have a network of informants and undercover agents in ministries across the country. Their most damning discoveries have led to prosecutions for fraud and to exposes on "PrimeTime Live," on "Dateline NBC," in the Los Angeles Times, and elsewhere. Trinity's admirers like to think of the foundation as the conscience of evangelical Christianity. Its targets prefer to call it a godless, penniless, and deeply annoying cult. "The televangelist I worked for not only feared Ole--he wanted to do him physical harm," one of Anthony's informants told me. "These guys think he's Satan incarnate."

The opinion is not a new one. When Anthony was six years old, the family's Lutheran minister, in St. Peter, Minnesota, asked his mother not to bring him to catechism class anymore. "He told her I was an evil child," Anthony says. "I was disruptive and asked too many questions." After his family moved to Wickenburg, Arizona, Ole pulled himself together for a while. He earned straight A's in school and a citizenship award from the local veterans' association. But at the age of sixteen the Devil reclaimed him--"Or maybe it was just hormonal," he says. He grew his hair down his back and shot Mexican heroin with his girlfriend. He went on joyrides in stolen cars. The spree culminated in the high desert on an Easter morning in 1955, at a chapel in a natural amphitheatre that had a forty-foot cross. Anthony took a can of gasoline and doused the cross, then lit a match and threw it on--just in time for the sunrise service. "The cross was treated with creosote, and it burned forever," he says.

The police gave him the usual ultimatum for small-town delinquents: he could go to prison or enlist in the military. He ended up at Parks Air Force Base, near San Francisco, where he scored so well on a battery of tests that he was transferred to Denver for intensive training in geophysics, atmospheric science, and electronics. "We heard every kind of rumor," he says. "We were going to be super-spies. We were going to blow up Russia." In fact, the Air Force was training him to detect nuclear tests in countries suspected of developing the bomb. For the next twelve years--from 1956 to 1968--Anthony skulked behind the Iron and Bamboo Curtains, installing arrays of seismic, atmospheric, and oceanographic sensors. When a nuclear blast occurred, he would triangulate its position, factor out wind currents and natural seismic activity, and calculate its power. "Ole always pushed the edge," William Ballard, his commanding officer at the time, told me. "I wouldn't have guessed that he would become so religious. But, when he gets into something, he gets into it right up to his eyeballs."