Ecclesiastes 10:10 YLT

⁸  Whoso is digging a pit falleth into it, And whoso is breaking a hedge, a serpent biteth him.

⁹  Whoso is removing stones is grieved by them, Whoso is cleaving trees endangered by them.

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.