20th-century Protestantism

Pentecostalism, also known as mainline or classical Pentecostalism, is a movement within the evangelical wing of Protestant Christianity that emphasizes direct personal experience of God through baptism with the Holy Spirit. The term Pentecostal is derived from Pentecost, an event that commemorates the descent of the Holy Spirit upon the Apostles and other followers of Jesus Christ while they were in Jerusalem celebrating the Feast of Weeks, as described in the Acts of the Apostles (Acts 2:1–31).

period of religious activism in American history

Christian awakening in the United States

Christian conference

humanitarian relief effort