Romans 6:21 But what fruit were you getting at that time from the things of which you are now ashamed? For the end of those things is death.
Those who have been set free from being slaves of sin are ashamed of the fruit that was produced during the time they were in bondage to sin and death. The distinction Paul is making is not between two different classes of Christians and physical death. No, the end result of being in bondage to sin and death is the eternal spiritual death of hell.
Focus on Christ #135