What is the profit to a man in all his labor which he labors under the sun?

Then I looked on all the works that my hands had done, and on the labor that I had labored to do; and, behold, all was vanity and striving of spirit; and there was no profit under the sun.

For what has man from all his labor, and from the striving of his heart, in which he has labored under the sun?

For all his days are sorrows, and his task grief; yea, his heart does not take rest in the night. This also is vanity.

And this also is a sore evil, that in all, as he came, so shall he go; and what profit does he have who has labored for the wind?

In all labor there is profit, but the talk of the lips tends only to poverty.

For what profit is it to a man if he gains the whole world, and loses his own soul? Or what will a man give in exchange for his soul?