Being critical of Bishops

As one new to blogging,it is interesting to know that blogs that do not receive comments still get read.Yes,one of my previous blogs should have read Saint Thomas and the second way.I have been asked if it is right to be critical of bishops when they teach error in public. Saint Thomas answered yes.However,there are ways and means:there is no need to get personal.A spirit of bitterness has been a serious failure of orthodox Catholics.