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!
4:8 A man who is all alone with no companion,
he has no children nor siblings;
yet there is no end to all his toil,
and he is never satisfied with riches.
He laments, “For whom am I toiling and depriving myself of pleasure?”
This also is futile and a burdensome task!