Ecclesiastes 10:8-10

International Standard Version

⁸ Whoever digs a pit may fall into it,
    and whoever breaks through a wall
        may suffer a snake bite.
⁹ Someone who quarries stone might be injured;
    someone splitting logs can fall into danger.

¹⁰ If someone’s ax is blunt—the edge isn’t sharpened—
    then more strength will be needed.
        Putting wisdom to work will bring success.