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16By their fruits you will know them. Do you gather grapes from thorns, or figs from thistles? 17Even so, every good tree brings forth good fruit; but the corrupt tree brings forth evil fruit. 18A good tree can`t bring forth evil fruit, neither can a corrupt tree bring forth good fruit. 19Every tree that doesn`t grow good fruit is cut down, and thrown into the fire. 20Therefore, by their fruits you will know them.
Matthew 7:16-20 (WEB)