Ecclesiastes 5:3; Ecclesiastes 5:6; Ecclesiastes 7:6; Ecclesiastes 10:20; Ecclesiastes 12:4

3 For the dream comes through much effort and the voice of a fool through many words.

6 Do not let your speech cause you to sin and do not say in the presence of the messenger of God that it was a mistake. Why should God be angry on account of your voice and destroy the work of your hands?

6 For as the crackling of thorn bushes under a pot, So is the laughter of the fool; And this too is futility.

20 Furthermore, in your bedchamber do not curse a king, and in your sleeping rooms do not curse a rich man, for a bird of the heavens will carry the sound and the winged creature will make the matter known.

4 and the doors on the street are shut as the sound of the grinding mill is low, and one will arise at the sound of the bird, and all the daughters of song will sing softly.