Wacker is in a strong position to make this argument. He was raised as a Pentecostal and still calls Pentecostals "my people," though he now identifies himself "simply as an evangelical Christian." He's also a Stanford- and Harvard-educated scholar who teaches American religious history at Duke. His ear is trained for the concerns that both his subjects and his peers might raise.
For example, his chapter on worship begins with the acknowledgement that early Pentecostals would have had little to say on the topic, because "in their minds worship was something one did, not something one theorized about. After all, had not the Holy Spirit delivered them from all that Romish nonsense?" Anticipating the complaints of his colleagues, Wacker often introduces items of evidence with the phrase "chosen virtually at random" to blunt accusations of proof-texting—letting his conclusions rule the data, rather than the other way around.
Wacker should not be accused of slighting his data. He follows the scholarly convention of throwing heaps of evidence (and footnotes) at his topic, but rather than clogging up the book, this source material is its beating heart. Details introduce figures from Pentecostalism's early days (1900-1925) in all their colorful passion—evangelist Burt McCafferty, who cut through 14 inches of ice to baptize a convert; Canadian speaker B.L. Fitzpatrick, who got into a fistfight over a question regarding the nature of God; preacher Aimee Semple McPherson, who told Commerce Secretary Herbert Hoover to "order your minions of Satan to leave my [radio] station alone."
Yet Wacker asserts that early Pentecostals occupied space within the fringes as well. In fact, in most respects the movement's makeup closely matched the demographic profile of the United States. Where earlier scholars (specifically Robert Mapes Anderson, author of the 1979 book Vision of the Disinherited: The Making of American Pentecostalism) found a sect composed overwhelmingly of the poor, illiterate victims of rapid modernization, Wacker finds laborers with average schooling and average upward mobility. Certainly early Pentecostals differed from the general public in a number of ways; they were less rigid about race and gender, less patriotic, and much more restrictive regarding social activities, for example. But they weren't the exotic species their critics lampooned.
Once Wacker had retrieved early Pentecostals' stories—largely through meticulous analysis of their many periodicals—he had to decide what to make of them, what interpretive framework to impose. In the essay mentioned above, Wacker likens such endeavors to the work of missionaries, "for [historians], like missionaries, remain convinced that their schemes are somehow more true, or more useful, or more likely to produce further insight, than the actors' own." The task was complicated in this study by the fact that the actors stridently denied having a scheme at all.
Because the Holy Ghost was really in charge, early Pentecostals professed to have no human leaders, no creeds, no business plans, no need for academic training, and no history except the book of Acts. Wacker identifies this aspect of Pentecostal identity as primitivism, "a downward or even backward quest for the infinitely pure and powerful fount of being itself."
Primitivism explains a lot of Pentecostal attitudes and behaviors, but it leaves several key questions unanswered, starting with the question of how a solely backward-looking movement could survive, let alone explode. Wacker finds those answers in another aspect of Pentecostal character: pragmatism. People who claimed to have no leaders flocked to hear big-name evangelists—and touted those names on promotional posters. Believers with no creeds attacked believers who held different ideas about the Trinity or the necessity of speaking in tongues. Zealots with their eyes fixed on heaven managed to turn more than a few bucks on earth, and avowed anti-intellectuals founded Bible colleges. Cool heads clearly helped to keep revival fires burning.
One area of the Pentecostal experience that has remained largely in the grip of the primitivist impulse is the notion of history. In the 1997 revision of his 1971 book on Pentecostalism, Vinson Synan took time in the preface to justify his addition of the word "tradition" to the title "despite the fact that most Pentecostals have disdained the word 'tradition' as belonging to the older and colder 'established' churches." "History" is not even a product category at Pentecostal Charisma House Books. Acknowledging their roots—which certainly extend through nineteenth-century holiness movements, back to early Methodists and John Wesley, further back to Pietists and Dissenters, and through many other stops on the way to the early church—is not something most Pentecostals have been eager to do. Their opinions on this book, if they publish any, should be interesting.
Quoting his colleague David Steinmetz, Wacker likes to say the historian's task is "to resurrect the dead and let them speak." Wacker accomplishes that goal in Heaven Below, for which both scholars and lay readers can be grateful. But Wacker goes beyond ventriloquism by reading between his subjects' lines to uncover traits the actors would not have recognized, and likely would have repudiated. The resulting sympathetic yet challenging account represents a crucial advance in Pentecostal scholarship.
Elesha Coffman is managing editor of Christian History magazine.
Copyright © 2001 Christianity Today. Click for reprint information.
More Christian history, including a list of events that occurred this week in the church's past, is available at ChristianHistory.net. Subscriptions to the quarterly print magazine are also available.
Christian History's issue 58 tells the story of Pentecostalism's beginnings and early years, and includes an article by Wacker on the reception pentecostalism received from evangelicals. The issue can be ordered here.
ChristianBook.com and Amazon.com offer the books mentioned in this essay, including:
Heaven Below: Early Pentecostals and American Culture, by Grant Wacker; Harvard, 2001; $35
Religious Advocacy and American History, edited by Bruce Kuklick and D.G. Hart; Eerdmans, 1997
The Holiness-Pentecostal Tradition: Charismatic Movements in the Twentieth Century, by Vinson Synan; Eerdmans, 1997 
Vision of the Disinherited: The Making of American Pentecostalism, by Robert Mapes Anderson; Oxford, 1979
Synan also recently edited The Century of the Holy Spirit: 100 Years of Pentecostal and Charismatic Renewal.
Previous Christianity Today coverage of Pentecostalism includes:
Brazil's Surging Spirituality | Churches of all stripes have been growing for decades, as have the controversies and challenges facing evangelicals. (Dec. 4, 2000)
Pie-in-the-Sky Now | Two scholars argue that Pentecostalism, especially in Brazil, is not so otherworldly as many think. (Nov. 27, 2000)
Grow With God | World Assembly of God Fellowship aims to triple its size. (Aug. 23, 2000)
Should We All Speak in Tongues? | Some say speaking in tongues is proof of 'baptism in the Holy Spirit.' Are those who haven't spoken in tongues without the Holy Spirit? (March 21, 2000)
Brazil: Wrestling With Success | (Nov. 16, 1998)
World Growth at 19 Million a Year | (November 16, 1998)
Conversation or Competition | Pentecostals, Roman Catholics in long-standing talks to resolve conflicts, discover some commonalities. (Sept. 7, 1998)
Romancing Pentecostalism | Clark Pinnock's theology of the Holy Spirit builds a bridge between divided communities within evangelicalism. (Nov. 11, 1996)
Christian History Corner appears every Friday at ChristianityToday.com. Previous editions include:
Eyewitness to a Massacre | The bloodbath that started on August 24, 1572, left thousands of corpses and dozens of disturbing questions. (Aug. 24, 2001)
Live Long and Prosper | Though a recent survey raises questions, the health benefits of faith have been documented for centuries. (Aug. 17, 2001)
Divided by Communion | What a church does in remembrance of Christ says a lot about its history and identity. (Aug. 10, 2001)
Thrills, Chills, Architecture? | The most exciting adventure at St. Paul's Cathedral would be a time-traveling jaunt through its history. (August 3, 2001)
Deep and Wide| A dive into Reformation imagery yields striking new insights, while a drive-by church history overview largely disappoints. (July 27, 2001)
Shelling the Salvation Army | If William Booth's church could handle sticks and stones in the 1880s, it should withstand the recent barrage of hateful words. (July 20, 2001)
Historical Hogwash | Two books—one new, one newly reissued—debunk false claims about the "real" Jesus. (July 13, 2001)
Ghosts of the Temple | Soon after Jerusalem fell, the Roman Colosseum went up. Coincidence? (July 6, 2001)
Endangered History | The National Trust's list of imperiled places gives unnoticed gems a chance to shine. (June 29, 2001)
The Communion Test | How a "Humble Inquiry" into the nature of the church cost Jonathan Edwards his job. (June 22, 2001)
Visiting the Other Side | The Israelites spent time on both sides of the Jordan. Now tourists can, too. (June 8, 2001)