I'm glad I'm Catholic... I bet you are not.
2-and then argued, not so correctly,
3-that Jesus must therefore be divine in a separate sense from his father.
Well I looked up antipope Hippolytus!
To begin with, Hippolytus was a "great-grandson" of St. John the Apostle.
That is, we can trace his line of apostolic succession directly to John. He was commissioned by St. Irenaeus who was commissioned by Polycarp who was commissioned by (or at least knew) St. John himself. So there can be no question about his legitimacy as a bishop.
From the fourth century on, the Roman Church venerated Hippolytus as a saint.
Even popes have acknowledged him as a saint. Yet he was also the first antipope (one illegally elected at the same time).
From Publishers Weekly
"The New Testament is a collection of writings that support a particular set of views of Christianity (Ehrman explains why this is both a good thing and a bad thing). p>