AbstractIn 1899, a religious revival in Needles, California, included the first recorded instance of tongues-speech in California. The revival was begun by a white Holiness preacher and included a predominantly Native American, but ethnically mixed, congregation. The Mohave Indians at the heart of the Needles Revival had survived in the Southern California borderlands by crossing boundaries and building new communities in the shadow of the modernizing state. As they participated in the Needles Revival, Mohave believers and others combined this pattern of boundary crossing with the theology and praxis of the Holiness movement to develop a local manifestation of the emerging Pentecostal movement. During the early twentieth century, a series of revivals around the world and a network of Holiness groups and missionaries developed into modern Pentecostalism. The most prominent of these revivals took place on Azusa Street in Los Angeles and emphasized speaking in tongues and multiracial community, not unlike the earlier revival in Needles. Taken together, these two revivals show the influence of Southern California on early Pentecostalism. Speaking in tongues enabled early Pentecostals to cross boundaries imposed by California's racial hierarchy, and the multiethnic communities they formed were a testament to the cultural dynamism of the region. As Mohave converts embraced Pentecostalism and eventually assumed leadership of the Needles congregation, they brought their legacy of survival and adaptation to the movement. In the process, they helped to shape modern Pentecostalism.