148-day-later-update: I may have been misguided here. There's a difference between being wrong, and being dishonest. Dishonesty implies deception -- intentionally misleading people.

The pastor in my example misled people with wrong arguments, but it was unintentional. While this type of action can lead to horrible results, it's hard to call the pastor "dishonest" if he didn't intend to deceive. Perhaps a better descriptor would be "fool" or "ignoramus".