Think of how Satan tried to deceive Job and his friends. God permitted Satan to test Job. His friends interpreted that trial as caused by unrepented sin in Job. 16-20 A. Christians can distinguish these works and fruits. His word is our armor both for offensive and defensive fighting the fight of faith, Eph.
Christians have the ability to distinguish true teaching from false teaching.
Some Christians know Christian doctrine better than other Christians. B. Why the Works and Fruits of False Teachers Are Dangerous. Because wolves destroy people. Because they are a waste of money and may cause disease. This means that all false teachers, unless they repent, will lose their souls in hell.