Nontrinitarianism

====Modalist groups====
[[Oneness Pentecostalism]], as with other [[Sabellianism|modalist]] groups, teach that the Holy Spirit is a ''mode'' of God, rather than a distinct or separate person in the godhead, and that the Holy Spirit is another name for God the Father. According to Oneness theology, the Holy Spirit is the Father operating in a certain capacity or manifestation. The United Pentecostal Church teaches that there is no personal distinction between God the Father, the Son, and the Holy Spirit.<ref>Peter Althouse ''Spirit of the last days: Pentecostal eschatology in conversation'' p. 12. 2003. "The Oneness Pentecostal stream follows in the steps of the Reformed stream, but has a modalistic view of the Godhead"</ref><ref>See under heading "The Father is the Holy Ghost" in David Bernard, The Oneness of God, Chapter 6.</ref><ref name="basic.doctrine.list.father.is.holy.ghost">See also David Bernard, ''A Handbook of Basic Doctrines'', Word Aflame Press, 1988.</ref> The two titles "Father" and "Holy Spirit" (as well as others) are said to not reflect separate "persons" within the Godhead, but rather two different ways in which the one God reveals himself to his creatures. The Oneness view of Bible verses that mention God and his Spirit (e.g. Isaiah 48:16) is that they do not imply two "persons" any more than various scriptural references to a man and his spirit or soul (such as in Luke 12:19) imply two "persons" existing within one body.<ref>See under "The Lord God and His Spirit," in Chapter 7 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 }}.</ref>{{unreliable source?|date=May 2017}}{{dead link|date=May 2017}}