Revelation of Peter

One work accepted in Rome in the 2nd century, but later rejected as forgery, is the Revelation of Peter. The Muratorian Canon said it was received but not read in Public. The Muratorian Canon was a list of scriptures used in Rome before our canon today.

Since it was accepted it tends to tie the Catholic church to early gnosticism.

The Gospel of Peter deviates from the New Testament Gospels in some respects but keeps the core that Christ died, but rose the same day vs three days. It clearly deviated from the 4 received Gospels.

One doctrine found in it was Christ's brothers were actually from Joseph, from a previous marriage before Mary. Hegissipus seems to quote this work on the topic which discredits Hegissipus, the founder of the ever-virginity doctrine. It seems Rome eventually rejected the theory of Hegessipus in favor of the theory that the brothers were cousins, but early on their theories likely came from this false revelation.

Thus, we see Rome's doctrine of the ever-virginity was first supported by an Apocryphal forgery. Since the Muratorian Canon says they received it then some of their theories came from false works. Rome's doctrine originated with false works.