BlockquoteSecond, false teachers bring their harshest criticism against God’s most faithful servants…Religious teachers continue today to rebuke and to belittle God’s most faithful servants.
I struggle a little with this because it’s a little ironic. The point of the exercise is supposedly to identify who are the false teachers. This implies you already know who are the most faithful servants. Criticism itself isn’t wrong: Jesus ‘brought his harshest criticism against’ false teachers such as Sadducees or those he considered hypocrites. So the Sadducees should therefore use Tim Challies’ list to identify Jesus as a false teacher because they viewed each other as God’s faithful servants. Same goes for Paul who ‘brought his harshest criticism’ against false teachers.
I think he has a list of six.