Proverbs 23:9-11

Complete Jewish Bible

⁹ Don’t speak in the ears of a fool,
    for he will only despise the common sense in your words.

¹⁰ Don’t move the ancient boundary stone
    or encroach on the land of the fatherless;
¹¹ for their Redeemer is strong;
    he will take up their fight against you.