Proverbs 10:19 praises restraining lips as prudent, mirroring the prudent man's concealment of knowledge.

Proverbs 11:13 contrasts slander with keeping secrets, paralleling the prudent concealing knowledge.

Proverbs 13:16 uses the same prudent/fool contrast, with the fool flaunting folly as in Proverbs 12:23.

Proverbs 14:33 echoes this: wisdom rests in the discerning, but fools make it known — reinforcing the contrast between prudent concealment and foolish exposure.

Proverbs 15:14 adds that the fool's mouth feeds on folly — showing the inner drive behind proclaiming folly, paralleling the contrast.

Proverbs 15:2 contrasts wise and foolish speech, complementing the prudent's concealment of knowledge.

Proverbs 29:11 parallels this: a fool vents anger, a wise man controls — similar contrast between restraint and reckless outburst, here applied to anger rather than speech.

Ecclesiastes 10:3 shows a fool revealing his folly through actions, aligning with the fool proclaiming folly.

Ecclesiastes 10:12-14 expands this: wise words are gracious, but fools are consumed by their many words — reinforcing the danger of proclaiming folly.

Judges 16:17 shows Samson foolishly revealing his secret — a vivid example of the fool who does not conceal knowledge, leading to his downfall.

Ephesians 5:4 explicitly warns against foolish talk — extending the wisdom principle to NT conduct, urging thanksgiving instead.