1 Samuel 24:13

There is an old saying, From the evil-doer comes evil: but my hand will never be lifted up against you.

Matthew 7:16-18

By their fruits you will get knowledge of them. Do men get grapes from thorns or figs from thistles?

Matthew 7:20

So by their fruits you will get knowledge of them.

Matthew 12:33-34

Make the tree good, and its fruit good; or make the tree bad, and its fruit bad; for by its fruit you will get knowledge of the tree.

Matthew 15:19

For out of the heart come evil thoughts, the taking of life, broken faith between the married, unclean desires of the flesh, taking of property, false witness, bitter words:

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
By their fruits you will get knowledge of them. Do men get grapes from thorns or figs from thistles?
Matthew 12:33
Make the tree good, and its fruit good; or make the tree bad, and its fruit bad; for by its fruit you will get knowledge of the tree.
Matthew 15:19
For out of the heart come evil thoughts, the taking of life, broken faith between the married, unclean desires of the flesh, taking of property, false witness, bitter words:

General references

Psalm 7:16
His wrongdoing will come back to him, and his violent behaviour will come down on his head.
Psalm 25:21
For my clean and upright ways keep me safe, because my hope is in you.
Matthew 15:18
But the things which come out of the mouth come from the heart; and they make a man unclean.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain