Stuart Knechtle | 4 Things Christians Should Never Say | Give Me an An AnswerWatch Stuart Knechtle | 4 Things Christians Should Never Say | Give Me an An Answer with Stuart Knechtle. Explore scripture references and study the discussi…Stuart KnechtleScripture ReferencesMatthew 5:34theology · 0:02Speaker cites this verse to argue that Christians should not swear or use hyperbole in their speech, emphasizing that 'yes' should be 'yes' and 'no' should be 'no'.Isaiah 6:5theology · 0:13Speaker cites Isaiah's confession of unworthiness to argue that all people know when they are wrong, refuting the claim that only God can judge.