'Myself' in the Bible

And I set my mind to seek and explore by [man’s] wisdom all [human activity] that has been done under heaven. It is a miserable business and a burdensome task which God has given the sons of men with which to be busy and distressed.

I made great works: I built houses for myself; I planted vineyards for myself;

I made gardens and orchards for myself and I planted in them all kinds of fruit trees;

I made pools of water for myself from which to water the forest and make the trees bud.

Also, I collected for myself silver and gold and the treasure of kings and provinces. I provided for myself male singers and female singers, and the delights and pleasures of men—many concubines.

And who knows whether he will be a wise man or a fool? Yet he will have control over all the fruit of my labor for which I have labored by acting wisely under the sun. This too is vanity (futility, self-conceit).

There was a certain man—without a dependent, having neither a child nor a brother, yet there was no end to all his labor. Indeed, his eyes were not satisfied with riches and he never asked, “For whom do I labor and deprive myself of pleasure?” This too is vanity (a wisp of smoke, self-conceit); yes, it is a painful effort and an unhappy task.