 
 <prompt> Wetin dem dey consider Marcionism? Based on di last question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: For inside di Roman Catholic Church, stubborn and willful manifest heresy dey see as something wey fit cut person off from di Church spiritually, even before dem excommunicate am. Di Codex Justinianus (1:5:12) define "everybody wey no dey devoted to di Catholic Church and our Orthodox holy Faith" as heretic. Di Church don always dey handle harshly any form of Christianity wey dem see as heretical, but before di 11th century, e dey mostly dey revolve around individual preachers or small local sects like Arianism, Pelagianism, Donatism, Marcionism and Montanism. Di spread of di almost Manichaean sect of Paulicians westwards bring forth di famous 11th and 12th century heresies for Western Europe. Di first one na di Bogomils for modern day Bosnia, wey be like sanctuary between Eastern and Western Christianity. By di 11th century, more organised groups like di Patarini, di Dulcinians, di Waldensians and di Cathars don dey show face for towns and cities for northern Italy, southern France and Flanders. 