English: This is a hand drawn diagram of Modalism theology based on Isaiah 9:6 and John 14:8-12. Modalism is a minority viewpoint within Christianity that differs from both Trinitarianism and Arianism. Modern Christian groups that hold to Modalism theology are those in the United Pentecostal denomination and other Oneness Pentecostal sects. Modalism is considered a heresy by many Christian Trinitarian denominations such as Roman Catholics, Eastern Orthodox, and most Protestants.