His purpose was apparently to reinforce the dualist beliefs of the Cathars of these regions, and, in particular, to throw doubt on the validity of their spiritual lineage or ordo, the sequence of consolamenta by which they were linked to the Apostles.
Mark, who then presided over the Cathars of Lombardy, belonged to the ordo of Bulgaria, which Nicetas impugned.
Like original Bogomilism, was a moderate or monarchian dualist, believing in the inferiority of the "bad" or evil principle.
Unlike Mark, Nicetas came from a late Bogomil current which believed both principles were coeternal and coeval, more similar to Catharism.
In 1167 in the presence of Mark and other representatives of Cathar churches in Languedoc, France and Catalonia, Nicetas presided over the Council of Saint-Félix at which he renewed the consolamenta and confirmed the episcopal office of six Cathar bishops: Nicetas instructed the assembly that, just as the Seven Churches of Asia did not interfere with one another's independence, neither did the modern bishoprics of the Bogomils, and nor must the bishoprics of the Cathars.