10. If the iron hath been blunt, And he the face hath not sharpened, Then doth he increase strength, And wisdom [is] advantageous to make right.
11. If the serpent biteth without enchantment, Then there is no advantage to a master of the tongue.
12. Words of the mouth of the wise [are] gracious, And the lips of a fool swallow him up.
13. The beginning of the words of his mouth [is] folly, And the latter end of his mouth [Is] mischievous madness.