Ecclesiastes 2:18-23

18So I loathed all the fruit of my effort, for which I worked so hard on earth, because I must leave it behind in the hands of my successor.

19Who 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!

20So I began to despair about all the fruit of my labor for which I worked so hard on earth.

21For 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!

22What does a man acquire from all his labor and from the anxiety that accompanies his toil on earth?

23For all day long his work produces pain and frustration, and even at night his mind cannot relax! This also is futile!