6 .
Belief in Jesus is plainly pivotal for Catholics within the overall Christian church. Down the centuries there have been any number of 'heresies' ~ unhelpful, unproven side-issues that the Church has rejected. Which ONE of the following is not (if we may use such a phrase) a genuine heresy?
For about the first quarter (500 years) of the Christian era, the Gnostics believed that a system of hidden wisdom was essential alongside the revelation of God through Scripture and the person of Jesus
According to the Phlogiston Theory, not even God Himself could make Jesus both fully divine and yet fully human at the same time
Docetics accepted most of the remarkable teaching and precepts of Jesus ~ but refuted His divinity, claiming He could not 'be God' in any form (even while God remains omnipotent, presumably) because human existence would have soiled Him
The Arians (around 300 AD) interpreted Jesus as being special, inspired etc. but ultimately not in any sense on an equal level with God Himself, since there 'could not be two Gods'. It was to refute this that Constantine, the first Christian Emperor, convened the Council of Nicaea which in due course formulated the Nicene Creed ~ including the clear pronouncement that Jesus is 'one in being with the Father'