A false teacher isn’t going to tell you he’s teaching heresy. In fact, he’ll usually look and sound so sincere and passionate that you wouldn’t know he’s actually twisting God’s Word. The size of the crowds around him won’t tell you much either, since many people have been and continue to be led astray by teaching that pleases their ears.
The prophet Jeremiah kept telling the people of Judah over and over what God planned for Jerusalem, urging them to turn from their wicked ways. But the people preferred to listen to false prophets who told them what they wanted to hear. We have to make sure we’re not doing the same.
So, how exactly can you tell if someone is “wolf in sheep’s clothing”? You become a “fruit inspector,” just as Jesus said (Matthew 7:15–16). According to Pastor Shane Idleman of Westside Christian Fellowship, there are 7 telltale signs that can take the wool from our eyes:
1. Different Source
True teachers will reach for the Bible first, second, and always. They may use other sources of information to help explain what Scripture reveals, but the foundation of their message is always built upon “Thus says the Lord….” If you start hearing more from other sources than God’s Word, you may need to hit the door.
2. Different Message
The entire message of a true teacher will always revolve around the gospel of Jesus Christ. False teachers may mention Jesus here and there, but they will ultimately deny His deity and power (2 Peter 2:1). Of course, they won’t do so openly at first, and you’ll need to listen carefully to see if Jesus is at the core.
3. Different Position
True teachers will point to our sin and our need for salvation—and their lives will back that up. False teachers will promise freedom, but they themselves will be “slaves to depravity” (2 Peter 2:19). If a teacher’s lifestyle points to lust, greed, envy, or other enslaving passions, they are certainly not fit to teach.