For centuries after obtaining power during the reign....

“ For centuries after obtaining power during the reign of Constantine, Christians went on a censorship rampage that led to the virtual illiteracy of the ancient Western world and ensured that their secret would be hidden from the masses. The scholars of other schools/sects evidently did not easily give up their arguments against the historicizing of a very ancient mythological creature. We have lost the exact arguments of these learned dissenters because Christians destroyed any traces of their works. Nonetheless, the Christians preserved the contentions of their detractors through their own refutations.For example, early Church Father Tertullian (c. 160-220 CE), an 'ex-Pagan' and a presbyter at Carthage, ironically admitted the true origins of the Christ story and other such myths by stating in refutation of his critics, 'You say we worship the sun; so do you. Interestingly, a previously strident believer and defender of the faith, Tertullian later renounced orthodox Christianity after becoming a Montanist. ”

D.M. Murdock

From : The Origins of Christianity and the Quest for the Historical Jesus Christ