Proverbs 12:17 in the King James Version
He that speaketh truth sheweth forth righteousness: but a false witness deceit.
Context
16 A fool shows his annoyance the same day, but one who overlooks an insult is prudent.
17 He who is truthful testifies honestly, but a false witness lies.
18 There is one who speaks rashly like the piercing of a sword, but the tongue of the wise heals.