Complex sentence: Unitarianism is a theological movement that came from orthodox Christianity named for its understanding of God as one person, in direct contrast to Trinitarianism, which defines God as three persons coexisting consubstantially as one being.
Split into simpler sentences: Unitarianism is a theological movement that came from orthodox Christianity. It is named for its understanding of God as one person, in direct contrast to Trinitarianism, which defines God as three persons coexisting consubstantially as one being.