Cross reference
Ecclesiastes 5:3
3 When you take an oath before God, put it quickly into effect, because he has no pleasure in the foolish; keep the oath you have taken.
Proverbs 15:2
2 Knowledge is dropping from the tongue of the wise; but from the mouth of the foolish comes a stream of foolish words.
Proverbs 10:19
19 Where there is much talk there will be no end to sin, but he who keeps his mouth shut does wisely.
Job 11:2
2 Are all these words to go unanswered? and is a man seen to be right because he is full of talk?
Ecclesiastes 10:12-14
12 The words of a wise man's mouth are sweet to all, but the lips of a foolish man are his destruction.
13 The first words of his mouth are foolish, and the end of his talk is evil crime.
14 The foolish are full of words; man has no knowledge of what will be; and who is able to say what will be after him?