His Word, not many words...

  Every word of God proves true;
  he is a shield to those who take refuge in him.
 Do not add to his words,
  lest he rebuke you and you be found a liar.
(Proverbs 30:5-6 ESV)
If the first part of this passage sounds familiar, it should.  As Solomon writes here he is repeating what his father David had stated.  He also adds a bit if wisdom found throughout this book - that in many words there is much sinning.  The more we talk, especially on our own, the more opportunity there is to say something untrue.  Less of our words, more of His.  That's something we all can take to heart.