Proverbs 4:16
For they sleep not, except they have done mischief; and their sleep is taken away, unless they cause some to fall.
More from Proverbs 4
Verse 1
Hear, ye children, the instruction of a father, and attend to know understanding.
Verse 2
For I give you good doctrine, forsake ye not my law.
Verse 3
For I was my father's son, tender and only beloved in the sight of my mother.
Verse 4
He taught me also, and said unto me, Let thine heart retain my words: keep my commandments, and live.
Verse 5
Get wisdom, get understanding: forget it not; neither decline from the words of my mouth.