Among Petrines, the Quran is recognisable as a decisive manifestation of the othrwise ethereal Petrine Lectionary in a strike against the spread of Mandaism in particular but also various other dark-age dogmas among Arabic pagans. Similarly, many of the early "Gnostic" documents, like the coptic letter of Peter to Philip, could be better understood as attempts written in Gnostic terms to bring the fore-runners of the Mandaeans back to the straight path.
The Abbeys represent the Petrine Magisterium, while the Noble houses with their heraldry and maintaining the chivalric Nomos represent the descendants of the 36 pairs of Alenzar/Hawariun in 12 apostolic tribal sees (Levi replacing Dan) sent out to the 70 nations of the world (71st being the Hebrew nation ministered by the Av Beth Din and 72nd being the Peleg nation ministered to by the Nasi Zaddokite Kohen)promoting the doctrine of accommodation (which was eventually adopted in the 7th century by Pope Gregory the Great) and appointed bishops from these families over the Abbeys in their realms. Only the House of Imran wearing Ephods as crowns were ever regarded as the rightful Koenigs among them.
After the crusades, their warrior monk orders tended to call their Abbots "Grand magister" and survived as the Noahite Prussian Knights of Malbork and in Cluj Napoca (Transylvania) for a few centuries prior to secularisation.