Bible Verses About Vanity: Worldly labour is

and I have looked on all my works that my hands have done, and on the labour that I have laboured to do, and lo, the whole is vanity and vexation of spirit, and there is no advantage under the sun!

And I have seen all the labour, and all the benefit of the work, because for it a man is the envy of his neighbour. Even this is vanity and vexation of spirit.