Matthew 7:16-18

Ye may know them by their fruits. Do men gather grapes of thorns, or figs of thistles?

Matthew 7:20

So then ye may know them by their fruits.

Matthew 12:33-34

Either say that the tree is good, and its fruit good; or say that the tree is bad, and its fruit bad; for the tree is known by its fruit. Brood of vipers!

Matthew 15:19

For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false testimony, blasphemies.

Treasury of Scripture Knowledge

Summary

As saith the proverb of the ancients, Wickedness proceedeth from the wicked: but mine hand shall not be upon thee.

General references

Bible References

Wickedness

Matthew 7:16
Ye may know them by their fruits. Do men gather grapes of thorns, or figs of thistles?
Matthew 12:33
Either say that the tree is good, and its fruit good; or say that the tree is bad, and its fruit bad; for the tree is known by its fruit. Brood of vipers!
Matthew 15:19
For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false testimony, blasphemies.

General references

Matthew 15:18
But the things which proceed from the mouth come out of the heart; and these defile a man.