Ecclesiastes 10:8-10

Darby Translation

⁸ He that diggeth a pit falleth into it; and whoso breaketh down a hedge, a serpent biteth him.

⁹ Whoso removeth stones is hurt therewith; he that cleaveth wood is endangered thereby.

¹⁰ If the iron be blunt, and one do not whet the edge, then must he apply more strength; but wisdom is profitable to give success.