The Azusa Street Revival was a historic series of revival meetings that took place in Los Angeles, California. It was led by William J. Seymour, an African-American preacher. The revival began on April 9, 1906, and continued until roughly 1915. On the night of April 9, 1906, Seymour and seven men were waiting on God on Bonnie Brae Street, "when suddenly, as though hit by a bolt of lightning, they were knocked from their chairs to the floor," and the other seven men began to speak in tongues and shout out loud praising God. The news quickly spread; the city was stirred; crowds gathered; and a few days later Seymour himself received the Holy Spirit; services were moved outside to accommodate the crowds who came from all around; people fell down under the power of God as they approached; people were baptized in the Holy Spirit and the sick were healed and sinners received salvation. The testimony of those who attended the Azusa Street Revival was "I am saved, sanctified, and filled with the Holy Ghost" in reference to the three works of grace of Holiness Pentecostals, the original branch of Pentecostalism. To further accommodate the crowds, an old dilapidated, two-story frame building at 312 Azusa Street in the industrial section of the city was secured. This building, originally built for an African Methodist Episcopal (AME) church, had more recently been used as a livery stable, storage building and tenement house. In this humble Azusa Street mission, a continuous three-year revival occurred and became known around the world. Stanley H. Frodsham, in his book, With Signs Following, quotes an eye-witness description of the scene: The revival was characterized by spiritual experiences accompanied with testimonies of physical healing miracles, worship services, and speaking in tongues. The participants were criticized by some 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.