Pentecostalism

=== Trinitarianism and Onenesss ===
During the 1910s, the [[Finished Work|Finished Work Pentecostal]] movement split over the nature of the [[Godhead in Christianity|Godhead]] into two camps – Trinitarian and [[Oneness Pentecostals|Oneness]].<ref name="Anderson2004"/> The Oneness doctrine viewed the doctrine of the Trinity as [[polytheistic]].<ref>Vinson Synan, The Century of the Holy Spirit: 100 Years of Pentecostal and Charismatic Renewal, 1901–2001 (Nashville: Thomas Nelson Publishers, 2001), 279.</ref>

The majority of Pentecostal denominations believe in the doctrine of the [[Trinity]], which is considered by them to be Christian [[orthodoxy]]; these include [[Holiness Pentecostal]]s and [[Finished Work|Finished Work Pentecostals]]. Oneness Pentecostals are [[nontrinitarian]] Christians, believing in the Oneness theology about God.<ref>Talmadge French, ''Our God is One'', Voice and Vision Publishers, 1999, {{ISBN|978-1-888251-20-3}}. The most recent and collegiate work was done by David S. Norris, PhD, "I Am: A Oneness Pentecostal Perspective.", Word Aflame Publishers, 2009, {{ISBN|978-1-56722-730-7}}.</ref>

In Oneness theology, the Godhead is not three [[Hypostasis (philosophy and religion)|persons]] united by one [[Homoousion|substance]], but one God who reveals himself in three different modes. Thus, God relates himself to humanity as our Father within creation, he manifests himself in human form as the Son by virtue of his [[incarnation]] as Jesus Christ ([[s:Bible (American Standard)/1 Timothy#3:16|1 Timothy 3:16]]), and he is the Holy Spirit ([[s:Bible (American Standard)/John#4:24|John 4:24]]) by way of his activity in the life of the believer.<ref>See under "The Son in Biblical Terminology" in Chapter 5 of David Bernard [http://ourworld.compuserve.com/homepages/pentecostal/One-Top.htm The Oneness of God {{webarchive|url=https://web.archive.org/web/20080216034825/http://ourworld.compuserve.com/homepages/pentecostal/One-Top.htm |date=2008-02-16 }}.  Retrieved on June 13, 2017.</ref><ref>{{cite web |url=http://www.upcbaypoint.com/onegodtruth.html |title=The Truth About One God |access-date=2015-08-21 |archive-url=https://web.archive.org/web/20150817001820/http://www.upcbaypoint.com/onegodtruth.html |archive-date=2015-08-17 }} The Truth About One God</ref> Oneness Pentecostals believe that Jesus is the name of God and therefore baptize in the name of Jesus Christ as performed by the apostles ([[s:Bible (American Standard)/Acts#2:38|Acts 2:38]]), fulfilling the instructions left by Jesus Christ in the [[Great Commission]] ([[s:Bible (American Standard)/Matthew#28:19|Matthew 28:19]]), they believe that Jesus is the only name given to mankind by which we must be saved ([[s:Bible (American Standard)/Acts#4:12|Acts 4:12]]).

The Oneness doctrine may be considered a form of [[Modalism]], an ancient teaching considered [[heresy]] by the Roman Catholic Church and other trinitarian denominations. In contrast, Trinitarian Pentecostals hold to the doctrine of the Trinity, that is, the Godhead is not seen as simply three modes or titles of God manifest at different points in history, but is constituted of three completely distinct persons who are co-eternal with each other and united as one substance. The Son is from all eternity who became incarnate as Jesus, and likewise the Holy Spirit is from all eternity, and both are with the eternal Father from all eternity.<ref>{{cite web|url=http://www.newadvent.org/cathen/15047a.htm|title=Catholic Encyclopedia: The Blessed Trinity|website=www.newadvent.org|access-date=2018-05-01|archive-date=2018-01-23|archive-url=https://web.archive.org/web/20180123070514/http://www.newadvent.org/cathen/15047a.htm|url-status=live}}</ref>