Ecclesiastes 10:8-11

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

9Whoso removeth stonesH68 is hurt therewith; he that cleaveth woodH6086 is endangered thereby.

10If the ironH1270 be blunt, and one do not whet the edge, then must he apply more strengthH2428; but wisdomH2451 is profitable to give success.

11If the serpent bite before enchantment, then the charmer hath no advantageH3504.