A faithful witness does not lie, but a false witness breathes out lies.
In the administration of justice much depends upon the witnesses, and therefore it is necessary to the common good that witnesses be principled as they ought to be; for, 1. A witness that is conscientious will not dare to give in a testimony that is in the least untrue, nor, for good-will or ill-will, represent a thing otherwise than according to the best of his...
A faithful witness will not lie,.... For that would be contrary to his character as faithful; and as he will not witness to a falsehood upon oath in a court of judicature, so neither will he tell a lie in common conversation.
A faithful witness, &c.--one tested to be such. utter lies--or, "breathe out lies"--that is, habitually lies (Pro 6:19; compare Act 9:1). Or the sense is, that habitual truthfulness, or lying, will be evinced in witness-bearing.