Ecclesiastes 10:11-15

If the serpent bites before being charmed, there is no benefit for the charmer.

Words from the mouth of a wise person are gracious, while the lips of a fool consume him;

the beginning of his talking is foolishness, and the end of it is evil insanity.

Yet the fool multiplies words. No person knows what will happen, and who can tell him what will come after him?

The labor of a fool makes him so weary that he does not even know how to go to a city.