Ecclesiastes 10:9-11

International Standard Version

⁹Someone who quarries stone might be injured;
someone splitting logs can fall into danger.

¹⁰If someone’s ax is blunt—the edge isn’t sharpened—
    then more strength will be needed.
        Putting wisdom to work will bring success.
¹¹If a serpent strikes despite being charmed,
    there’s no point in being a snake charmer.