Unitarian. Unitarians reject the doctrine of the Trinity, which holds that God is three persons in one essence (Father, Son, and Holy Spirit), and instead believe in the unity of God. This belief in the unity of God can also align with certain interpretations of Christ's role as a prophet rather than a divine being. Unitarianism as a distinct movement emerged in the early modern period, but its roots can be traced back to early Christian debates about the nature of Jesus and his relationship.