Ecclesiastes 2:21

2:21 For a man may do his work with wisdom, knowledge, and skill;

however, he must hand over the fruit of his labor as an inheritance

to someone else who did not work for it.

This also is futile, and an awful injustice!

Ecclesiastes 6:2

6:2 God gives a man riches, property, and wealth

so that he lacks nothing that his heart desires,

yet God does not enable him to enjoy the fruit of his labor –

instead, someone else enjoys it!

This is fruitless and a grave misfortune.