Proverbs 14:5 KJV
A faithful witness will not lie: but a false witness will utter lies.
Proverbs 14:5, King James Version
In context
4 Where no oxen are, the crib is clean: but much increase is by the strength of the ox.
5 A faithful witness will not lie: but a false witness will utter lies.
6 A scorner seeketh wisdom, and findeth it not: but knowledge is easy unto him that understandeth.