As music and dance reach a crescendo during a summer tent revival service in Clarksdale, MS, a worshipper is overtaken by the Spirit and lies on the ground in ecstatic revelry. Such displays of faith and emotion are still common in Pentecostal and Holiness congregations in the South, where worshipers become overtaken, or baptized in the Holy Spirit,  sometimes engaging in glossolalia, or speaking in tongues, as external evidence of their holy possession.