A faithful witness will not lie: but a false witness will utter lies.
Read Chapter 14
The Apostolic Constitutions
These things we have said concerning those that in truth have been martyrs for Christ, but not concerning false martyrs, concerning whom the oracle speaks, “The name of the ungodly is extinguished.” For “a faithful witness will not lie, but an unjust witness inflames lies.” For he that departs this life in his testimony without lying, for the sake of the truth, is a faithful martyr, worthy to be believed in such things wherein he strove for the word of truth by his own blood. .