Ecclesiastes 9:11 sets up the unpredictability of life, which the wisdom example in 9:13 then illustrates.

In Ecclesiastes 2:19, a wise man's labor goes to an unknown heir — similar to the wise man being forgotten after saving the city here.

Ecclesiastes 7:15 presents another paradox under the sun — a righteous perishing — similar to overlooked wisdom.

Ecclesiastes 1:3 asks what gain comes from toil — the same 'under the sun' question this wisdom example illustrates as fleeting.

Ecclesiastes 8:16 describes the toil of seeking wisdom, while here a specific example of wisdom is given.

Proverbs 21:22 also says a wise man scales a city — directly thematically parallel to the story of the wise deliverer.

Daniel 2:14 shows wisdom preventing execution — a parallel example of wisdom's saving power in a crisis.