Proverbs 29:9
If a wise man contendeth with a foolish man, whether he rage or laugh, there is no rest.
Cross-reference
Proverbs 18:6 directly states a fool's lips invite a beating — the same verbal aggression that causes unrest here.
Proverbs 14:16 contrasts the wise who turn from evil with the fool who is reckless — highlighting the fool's character seen here.
Proverbs 26:4 warns not to answer a fool according to his folly — complementing the idea that engaging a fool brings no peace.
Matthew 7:6 warns against giving holy things to dogs — illustrating the futility of reasoning with fools who will turn on you.
Ephesians 4:31 commands putting away wrath and anger—directly opposing the fool's raging behavior described here.
Ecclesiastes 10:13 traces a fool's speech from foolishness to evil madness — echoing the fool's raging and scoffing here.