This is from a protestant (non-Catholic, non-orthodox I believe anyway), full quote:
"The devil is not fighting religion. He's too smart for that. He is producing a counterfeit Christianity, so much like the real one that good Christians are afraid to speak out against it." -Vance Havner, who died in 1986
(Personal analysis of quote in comments)
It was created millennia ago and has been in practice since. ALL of nominal Christianity, as we know it, is absolutely corrupt in both doctrine and practice. Whether it's Olsteen, Copeland or the little church at the end of the street, the gates of Hell stand to bring you in with open arms.
The true church is hidden from the eyes of the world, as the scriptures testify and membership is by invite only.