Judges 9:53-57 records Abimelech's death by millstone—a direct fulfillment of the proverb: his evil returned on him.

2 Samuel 17:23 shows Ahithophel's suicide after rejected counsel—his own plot became the pit he fell into.

Esther 7:10 shows Haman hanged on his own gallows—a classic case of the pit-digger falling in.

Psalm 7:15 uses identical imagery: 'makes a pit and falls into it'—a direct parallel to the proverb.

Psalm 7:16 says mischief returns on the wicked's own head—reinforcing the same principle of self-inflicted downfall.

Psalm 9:15 says nations sink in the pit they made—the same theme of being caught by one's own scheme.

Psalm 9:16 says the wicked are snared in their own works—another echo of the proverb's truth.

Proverbs 26:27 uses the same 'dig a pit and fall into it' proverb, reinforcing the theme of self-inflicted harm.

Amos 5:19 describes fleeing a lion, meeting a bear, and leaning on a wall to be bitten by a serpent—a similar cascade of dangers, especially the wall-serpent link.

Proverbs 28:10 says the one who leads astray will fall into his own pit—directly parallels the pit-digging consequence in Ecclesiastes.