What are the beliefs one Oneness Pentecostals
   Andrei Rublev's Trinity, representing the Father, Son and Holy Spirit in a similar manner. (Photo credit: Wikipedia )   “ Oneness Pentecostalism ” is a descriptive name for an anti-trinitarian religious movement that developed over the course of the twentieth century on the margins of evangelicalism. As a movement, it has existed in various denominational forms and organizations, with its largest current manifestation being the United Pentecostal Church International . In most of its major forms it has been distinguished by:  A commitment to baptism in Jesus’ name rather than in the name of the Father, Son, and Holy Spirit  (including re-baptism for those baptized wrong the first time);  An accompanying rejection of the traditional Trinitarian doctrine held by the historic Christian churches;  A consequent rejection of the pre-existence of the Son of God.   Sometimes (but not always) these churches are also characterized by:  Legalism that manifests itself in making salvation de...