Ecclesiastes 10:11 in the King James Version
Surely the serpent will bite without enchantment; and a babbler is no better.
Context
10 If the ax is blunt, and one doesn’t sharpen the edge, then he must use more strength; but skill brings success.
11 If the snake bites before it is charmed, then is there no profit for the charmer’s tongue.
12 The words of a wise man’s mouth are gracious; but a fool is swallowed by his own lips.