'Profit' in the Bible

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

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.

What profit hath he that worketh in that wherein he laboureth?

Moreover the profit of the earth is for all: the king himself is served by the field.

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?

Wisdom is good with an inheritance: and by it there is profit to them that see the sun.