Ecclesiastes 10:8-13

⁸If you dig a pit, you could fall in. If you knock down a wall, you could be bitten by a snake.

⁹If you quarry stone, you could be injured. If you split logs, you could be hurt.

¹⁰If your ax is blunt and you don't sharpen it, you have to use a lot more force. Conclusion: being wise brings good results.

¹¹If the snake bites the snake charmer before it's charmed, there's no benefit to the snake charmer!

¹²Wise words are beneficial, but fools destroy themselves by what they say.

¹³Fools begin by saying foolish things, and end up talking evil nonsense.