All of them will die, many of them without returning to church. Some of those will be our brothers and sisters in Christ who were in sin. I fear that many of them will not have been our brothers and sisters in Christ, and so they will slip into a Christ-less eternity, face a good and just God while they are still pleading their own merits for salvation, and fall under God's deserved penalty forever. We could have helped them, like the man in I Cor. 5 who was caught in sin (and may have repented II Cor. 2?), or like the man in Gal. 6:1. But we didn't.
So, to whom is my brother Mark Dever referring? Check out his reflections on the Southern Baptist Mistake and the risk it represents for the judgment of pastors and the souls of our members.