Proverbs 12:23 parallels the idea that the prudent conceal wisdom while fools broadcast folly — directly consistent with wisdom resting in the discerning heart.

Proverbs 13:16 also contrasts prudent and fool: the prudent act with knowledge, fools flaunt folly — matching wisdom resting in the heart versus fools making it known.

Proverbs 15:2 contrasts the tongue of the wise (commending knowledge) with fools pouring out folly, echoing the internal wisdom vs outward folly in the main verse.

Proverbs 15:28 says the righteous ponders answers while the wicked pours evil — parallel to wisdom resting in the understanding heart vs fools revealing folly.

Proverbs 29:11 contrasts a fool venting his spirit with a wise man restraining — similar to wisdom resting in the heart while fools make their inward part known.

Ecclesiastes 10:3 shows a fool's lack of sense is evident to everyone on the road — echoing that fools make known their inward part.