How do we know the doctrine of false teachers is true?

The truth regarding false teachers is established in Scripture, which serves as our ultimate authority. In Acts 20:29-31, Paul emphasizes the need for vigilance among believers, reminding them that he has warned them for three years about the grievous wolves that would enter the church. Our knowledge of false teachers comes from the clear warnings provided in the Bible. By studying the whole counsel of God, we can discern truth from error and recognize the deceptive tactics of those who seek to lead us astray. The scriptures not only warn us but provide criteria for testing the spirits, affirming that we should abide in the doctrine of Christ and not be swayed by persuasive words that contradict biblical truth.