Trinitarian Christianity teaches that God is existent inside iii divine Souls or even members in a Godhead (known as "God the Father, "God the Boy" and "God a Holy Spirit") and "God a Boy" was the one who became incarnate, Oneness Theology states that there is only one member of the Godhead, namely Jesus, and the idea of God as duality or trinity is heretical. Oneness Pentecostals describe God in strictly monotheistic terms and do not use terms like "trinity", "souls", "members", "separate", "it", "the children", etc. to describe the one God of the Bible. Oneness Pentecostals baptize "in the title of Jesus Christ", which they claim is how the original church did (Acts 2:38; Acts 8:16; Acts 10:48; Acts 19:5; Acts 22:16). Oneness Pentecostals do not deny the existence or divinity of the Father, the Son and the Holy Spirit; they just deny that there are a multiplicity of persons, members, individuals, minds or consciences. According to them, Jesus is the incarnation of the fullness of God and not the incarnation of one third of the Godhead or one member or person of the Godhead (Colossians 2:9-10). In His deity, Jesus is God (which is known in Scripture as LORD, the Spirit of GOD, the Spirit of the LORD, the Holy Spirit, the Spirit of Christ, and the Father). This teaching is also referred to by many Trinitarians as Jesus-Only doctrine or Sabellianism. Many Trinitarian Christians believe it to be a heresy. Oneness Pentecostals deny that claim, and do not use the term "Jesus-Just school of thought" themselves. In fact, they often describe themselves not as "Jesus-Sole", but rather "Jesus-All about", in reference to their belief that the Godhead is fully manifest in Christ.

There are many who confuse the terms unitarian and oneness. Although unitarians and Oneness are similar in the belief that there is not a plurality of persons in the Godhead, unitarians believe that Jesus was only a moral authority whereas the diety and humanity of Jesus Christ is essential to Oneness doctrine.

In Oneness Theology there is an existential distinction that is clearly seen in Scripture, such as the incarnation where God in the incarnation comes to exist in Christ in complete human existence and continues to exist as God eternally as Spirit (see Matthew 1:23, "Behold, the virgin shall exist as by using toddler, & shall bring forth river the boy, & it shall call for his title Emmanuel, which existence interpreted is, God sustaining u.s.a."). There are many Oneness Pentecostal organizations. Here are the larger ones:

The Apostolic Assembly of the Faith in Christ Jesus, [http://www.apostolicassembly.org external link] United Pentecostal Church, [http://www.upci.org external link] The Pentecostal Assemblies of the World,[http://www.pawinc.org external link] The Apostolic Church of the Faith in Jesus Christ The Bible Way Churches of Our Lord Jesus Christ World Wide The Assemblies of the Lord Jesus Christ, [http://www.ALJC.org external link] The Church of Our Lord Jesus Christ of the Apostolic Faith The Apostolic Overcoming Holy Church of God Potter's House

While not as large as some of the above organizations the following groups have made a significant impact on Oneness Pentecostalism: Church of Jesus Christ of Prophecy (Headquarters: Benton, Tennessee) International Church of Jesus Christ (Headquaters: Columbus, Ohio) Apostolic Brethren (Headquaters: Columbus, Ohio)

Oneness Pentecostal groups with headquarters in other countries include The United Pentecostal Church of Colombia, an indigenous church and the largest non-Catholic church in the country; The Apostolic Church of the Faith in Christ Jesus, with headquarters in Mexico. The Oneness Pentecostal movement in the former U.S.S.R.; and the True Jesus Church, an indigenous church founded by Chinese believers on the mainland but whose headquarters is now in Taiwan. There are many smaller organizations (approximately 130 worldwide), independent churches, and charismatic fellowships that are Oneness Pentecostal in doctrine.

The Oneness movement dates back to the early 20th century, in the waning days of the Azusa Street Revival, however, believers contest that it was the original doctrine of the Apostles, and can be traced back to the "Day of Pentecost" in the Upper Room in Jerusalem as recorded in the Book of Acts.