Cross reference
1 Samuel 24:13
13 As says the proverb of the ancients, Out of the wicked comes forth wickedness; but my hand shall not be on you.
Matthew 7:16-18
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.
18 A good tree can't produce evil fruit, neither can a corrupt tree produce good fruit.
Matthew 7:20
20 Therefore, by their fruits you will know them.
Matthew 12:33-34
33 "Either make the tree good, and its fruit good, or make the tree corrupt, and its fruit corrupt; for the tree is known by its fruit.
34 You offspring of vipers, how can you, being evil, speak good things? For out of the abundance of the heart, the mouth speaks.
Matthew 15:19
19 For out of the heart come forth evil thoughts, murders, adulteries, sexual sins, thefts, false testimony, and blasphemies.
