"Verily, verily, I say unto you, He that entereth not by the door into the sheepfold, but climbeth up some other way, the same is a thief and a robber."
But since the "priest" rather follow Marx than Christ, stop spiritually defrauding Christian parishioners - defrock him!
Maybe more Alinsky than Marx from what I hear, but I never studied Marx very well. It would be like studying ordure.