Proverbs 14:5 in the King James Version
A faithful witness will not lie: but a false witness will utter lies.
Context
4 Where no oxen are, the crib is clean, but much increase is by the strength of the ox.
5 A truthful witness will not lie, but a false witness pours out lies.
6 A scoffer seeks wisdom, and doesn’t find it, but knowledge comes easily to a discerning person.