Central Christian doctrine that God became man in the form of Jesus , the son of God and the second person of the Holy
In Jesus the divine and human nature are joined but neither is changed or diminished. This difficult doctrine gave rise to a variety of heresies , some denying Jesus's divine nature, others his human nature. For orthodox believers the conflict was settled at the Councils of Nicaea (AD 325) and {{link=Chalcedon, Council of">Chalcedon (AD 451).