Matthew 7:16 in the King James Version
Ye shall know them by their fruits. Do men gather grapes of thorns, or figs of thistles?
Context
15 “Beware of false prophets, who come to you in sheep’s clothing, but inwardly are ravening wolves.
16 By their fruits you will know them. Do you gather grapes from thorns or figs from thistles?
17 Even so, every good tree produces good fruit, but the corrupt tree produces evil fruit.