Ecclesiastes 10:10 applies the same wisdom principle: a wise man sharpens his tool, a fool uses brute force. Both contrast wise and foolish action.

Ecclesiastes 10:14 portrays the fool's multiplying words—another manifestation of the same foolish heart contrasted here.

Ecclesiastes 2:14 contrasts the wise who see with the fool who walks in darkness—directly parallel to the right/left heart metaphor here.

Ecclesiastes 8:5 says the wise heart knows proper time and justice—same theme of discerning heart versus the fool's misdirection.

1 Kings 12:8 shows Rehoboam rejecting wise counsel and following foolish young men—a narrative illustration of the foolish heart's poor choices.

2 Chronicles 10:8 parallels Kings: Rehoboam forsakes elders' advice, acting on foolish counsel—same contrast as the wise/foolish heart.

Proverbs 17:16 highlights the fool's inability to use resources for wisdom—echoing the same heart lacking direction.