The Azusa Street Revival was a historic revival meeting that took place in Los Angeles, California, and is the origin of the Pentecostal movement.[1] It was led by William J. Seymour, an African American preacher. It began with a meeting on April 9, 1906, and continued until roughly 1915. The revival was characterized by spiritual experiences accompanied with testimonies of physical healing miracles,[2] worship services and speaking in tongues. The participants were criticized by the secular media and Christian theologians for behaviors considered to be outrageous and unorthodox, especially at the time. Today, the revival is considered by historians to be the primary catalyst for the spread of Pentecostalism in the 20th century.