Souls Harbor United Pentecostal Church is affiliated with the United Pentecostal Church International.

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The  United  Pentecostal Church International (UPCI) is a Oneness Pentecostal organization with churches, ministers, and members across the globe. With roots anchored firmly in the Bible and a vision for ministering to communities around the world, the UPCI embraces its mission to carry the whole gospel to the whole world by the whole church. (https://www.upci.org/about/about-the-upci)