Complex sentence: The practice of Umbanda and all the African-Brazilian religions are seen by the Pentecostal Churches as black witchcraft and devil worship, and the incorporation of Orixás is called demon possession.
Split into simpler sentences: The practice of Umbanda and all the African-Brazilian religions are addressed by the Pentecostal Churches as black witchcraft and devil worship. In the Pentecostal Churches' preachings, the incorporation of Orixás is called demon possession.