Matthew 7:17

15“Beware of false prophets, who come to you in sheep’s clothing, but inwardly are ravening wolves.

16By their fruits you will know them. Do you gather grapes from thorns or figs from thistles?

17Even so, every good tree produces good fruit, but the corrupt tree produces evil fruit.

18A good tree can’t produce evil fruit, neither can a corrupt tree produce good fruit.

19Every tree that doesn’t grow good fruit is cut down and thrown into the fire.