Ecclesiastes 2:19

2:19 Who knows if he will be a wise man or a fool?

Yet he will be master over all the fruit of my labor

for which I worked so wisely on earth!

This also is futile!

Ecclesiastes 4:16

4:16 There is no end to all the people nor to the past generations,

yet future generations will not rejoice in him.

This also is profitless and like chasing the wind.

Ecclesiastes 8:12

8:12 Even though a sinner might commit a hundred crimes and still live a long time,

yet I know that it will go well with God-fearing people – for they stand in fear before him.