This work develops a Classical Pentecostal theology of religions that utilizes their tradition of testimony as a pneumatological paradigm for interreligious encounter and dialogue. The author shows that Pentecostals have the opportunity of using their historic practice of personal testimony as a public form of Spirit-inspired speech for engaging in interfaith conversations. This study examines the contemporary setting of cultural diversity and religious plurality that is fast becoming typically descriptive of a world increasingly characterized by globalization with a focus on issues involving Pentecostals, especially with its strong heritage of evangelism and missions, generally conservative ethical and theological history, and undeniable multicultural variety. Its context is the United States, but its conversation is global.