People who embrace apostasy are destroyed by it. Churches wither and die because of it. Consider the fact that by the end of the first century, when the apostle John wrote Revelation 2-3, five out of the seven churches in Asia Minor were either beginning to defect from the faith or were already apostate bodies. . . . Christ’s central message to all but two of the churches included a mandate to deal with apostates in their midst. The battle for truth in the church has always been a very, very difficult but necessary conflict.

– John MacArthur