Proverbs 26:4 directly commands not to answer a fool — the very wisdom the people followed by staying silent.

Amos 5:13 says the prudent keep silent in evil times — Rabshakeh's taunt was an evil time, so silence was prudent.

Proverbs 11:12 says a man of understanding holds his peace — the people's silence demonstrated understanding.

Proverbs 9:7 warns that correcting a mocker brings shame — explaining why silence toward Rabshakeh was wise.

Matthew 7:6 warns against casting pearls before swine — Rabshakeh's blasphemy showed he was unworthy of a reply.