"The notion of paganism, as it is generally understood today, was created by the early Christian Church. It was a label that Christians applied to others, one of the antitheses that were central to the process of Christian self-definition. As such, throughout history it was generally used in a derogatory sense. - Owen Davies, Paganism: A Very Short Introduction, 2011"
"The term pagan is not attested in the English language until the 17th century.[24] In addition to infidel and heretic, it was used as one of several pejorative Christian counterparts to gentile as used in Judaism and to kafir ('unbeliever') and mushrik ('idolater') as in Islam.[25]"
https://en.wikipedia.org/wiki/Paganism
"The notion of paganism, as it is generally understood today, was created by the early Christian Church. It was a label that Christians applied to others, one of the antitheses that were central to the process of Christian self-definition. As such, throughout history it was generally used in a derogatory sense. - Owen Davies, Paganism: A Very Short Introduction, 2011"