It is admirable to stand up for what you believe. Those who are gullible, fall for anything, and easily fall into heresy. Yet, even those who are living a life firmly founded on faith need to keep an open mind. Defend the truth, allow the Holy Spirit to reveal error. Take a lesson from the Jews of Berea.
“The Jews there were better disposed than those in Thessalonica, for they welcomed the message with all eagerness and carried on a daily study of the Scriptures to see if Paul’s message was true. Many of them came to believe, and not a few distinguished Greek women and men (Acts 17:11-12 Williams New Testament).” Search the scriptures and believe!