In Matthew 7:15-20 Jesus speaks about false teachers. Outwardly false teachers appear harmless, but they lead many to destruction. How can you recognize them? Christ says by their fruit. This is because the fruit of someone’s life shows what kind of “tree” they are, what kind of person, what kind of nature one has. All people act according to their nature. Salvation comes by God changing one’s nature so that he no longer follows those who produce bad fruit but rather Christ himself.