So are you saying to mark them or ignore them like Bickle does?
How do I know Bickle is not just like the silly, giggly girl, who is being careless by ignoring the false doctrine coming up in the ranks? Does he not realize that he will have to step down one day and someone else take his place?
This is the exact same problem within the presbyterian USA church, when people with false doctrine stepped up to the plate and were given positions to spread the falseness. The people wrongly thought surely God will not allow it to happen to the church. They ignored it...because they didn't want war...they wanted peace. They had to compromise in order to get people to work together.
The church needs to fix it's own problems before it dares step out into the world arena thinking it's going to occupy until Jesus comes.