Cross reference
1 Samuel 24:13
13 As saith the proverb of the ancients, Wickedness proceedeth from the wicked: but mine hand shall not be upon thee.
Matthew 7:16-18
16 Ye shall know them by their fruits. Do men gather grapes of thorns, or figs of thistles?
17 Even so every good tree bringeth forth good fruit; but a corrupt tree bringeth forth evil fruit.
18 A good tree cannot bring forth evil fruit, neither can a corrupt tree bring forth good fruit.
Matthew 7:20
20 Wherefore by their fruits ye shall know them.
Matthew 12:33-34
33 Either make the tree good, and his fruit good; or else make the tree corrupt, and his fruit corrupt: for the tree is known by his fruit.
34 O generation of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart the mouth speaketh.
Matthew 15:19
19 For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies:
