The following quote by Martyn Lloyd-Jones was written about 55 years ago. It holds true today as well, maybe even more so:
“It seems more and more clear that the greatest enemies of the true Christian faith are not those who are right out in the world militantly persecuting Christianity, or flagrantly ignoring its teaching; but rather those who have a false and spurious Christianity.”
“It is a false and counterfeit Christianity that has always been a hindrance to, and the greatest enemy of, true spirituality. And surely the greatest trouble at this present moment is the worldly state of the Church.
“We should be much more concerned about the state of the Church herself than about the state of the world outside the Church.”