"(For many walk, of whom I have told you often, and now tell you even weeping, that they are the enemies of the cross of Christ: Whose end is destruction, whose God is their belly, and whose glory is in their shame, who mind earthly things.)" (Phil. 3:18-19)
Apostasy is a hard road. Even today we hear or read of 'preachers' (or 'Evangelists') who claim to be "Christian" and yet deny the fundamental doctrine of eternal retribution (or Hell). Others claim to be "Christian" and yet their music mimics the 'world system' in style and emotion. Whether they preach or sing, they have one foot in the world and another 'in' the Lord. What is the result? Among other verses in the Bible, Paul declares here that their end is 'destruction' (or to perish). Whereas before they were known to be 'ok', now they are called 'enemies of the cross of Christ.' What a warning! I think it should cause us to shudder to think that people who 'claim' to know Christ, may not even end up being with Christ.