Ecclesiastes 10:10-12

New International Version - UK

¹⁰ If the axe is dull
    and its edge unsharpened,
more strength is needed,
    but skill will bring success.

¹¹ If a snake bites before it is charmed,
    the charmer receives no fee.

¹² Words from the mouth of the wise are gracious,
    but fools are consumed by their own lips.