Matthew 7:16-20

16You can identify them by their fruit, that is, by the way they act. Can you pick grapes from thornbushes, or figs from thistles?

17A good tree produces good fruit, and a bad tree produces bad fruit.

18A good tree can’t produce bad fruit, and a bad tree can’t produce good fruit.

19So every tree that does not produce good fruit is chopped down and thrown into the fire.

20Yes, just as you can identify a tree by its fruit, so you can identify people by their actions.