There is no question that many believers even 10-50 years ago adhere to false doctrins. False doctrins can be found in every denomination, and are the basis for the origins of christian cults. I seriously doubt this situation will get any better. However, this again is not representative of 'THE Church' as a whole. There are still those in the majority which do adhere to sound doctrin, and are effective in their ministry.
Once the Body is complete there is no reason any longer for the church to remain on earth and Christ will receive His bride in heaven as complete (Eph.5:27)
How can the body be complete if there are still those to be won during the tribulation?
How can the body be complete if there are still those to be won during the tribulation? That is the essential difference in Dispensational theology and non-dispensational theology.
In the church age, when a gentile or jew believes in Christ he becomes a Christian (a member of the Body of Christ)
All of those who became before the Church age (Acts 2), (friends of the Bride) were either saved gentiles (Enoch, Noah, Job) or saved Jews.
When the Church is removed, when one believes in the Tribulation period (a resumption of the Jewish age-Daniels 70th week) one will be either a saved Jew or Gentile, not a Christian.
Only in this dispensation are there three groups of people, Gentile, Jew and Church (saved)(1Cor.10:32)