Ecclesiastes 3:9

What profit hath a man of all his labour which he taketh under the sun?

In all labour there is profit: but the talk of the lips tendeth only to penury.

And this also is a sore evil, that in all points as he came, so shall he go: and what profit hath he that hath laboured for the wind?

Then I looked on all the works that my hands had wrought, and on the labour that I had laboured to do: and, behold, all was vanity and vexation of spirit, and there was no profit under the sun.

For what is a man profited, if he shall gain the whole world, and lose his own soul? or what shall a man give in exchange for his soul?