Matthew 7:15-20

15 "Be careful of false prophets. They come to you looking gentle like sheep, but they are really dangerous like wolves.

16 You will know these people by what they do. Grapes don't come from thornbushes, and figs don't come from thorny weeds.

17 In the same way, every good tree produces good fruit, but a bad tree produces bad fruit.

18 A good tree cannot produce bad fruit, and a bad tree cannot produce good fruit.

19 Every tree that does not produce good fruit is cut down and thrown into the fire.

20 In the same way, you will know these false prophets by what they do.