His diligence was to find out acceptable words, right scripture, and the words of truth.

For who knoweth, whether he shall be a wise man or a fool? And yet shall he be lord of all my labours, which I with such wisdom have taken under the Sun. Is not this a vain thing?

Forsomuch as a man should weary himself with wisdom, with understanding and opportunity, and yet be fain to leave his labours unto another, that never sweat for them. This is also a vain thing and a great misery.

but heaviness, sorrow and disquietness all the days of his life? Insomuch that his heart cannot rest in the night. Is not this also a vain thing?

He giveth unto man, what it pleaseth him; whether it be wisdom, understanding, or gladness. But unto the sinner he giveth weariness and sorrow, that he may gather and heap together the thing, that afterward shall be given unto him whom it pleaseth God. This is now a vain thing, yea a very disquietness and vexation of mind.

Again, I saw that all travail and diligence of labour was hated of every man. This is also a vain thing, and a vexation of mind.

There is one man, no more but himself alone, having neither child nor brother: yet is there no end of his careful travail, his eyes cannot be satisfied with riches. Yet, doth he not remember himself, and say, "For whom do I take such travail? For whose pleasure do I thus consume away my life?" This is also a vain and miserable thing.

As for the people that have been before him, and that come after him, they are innumerable: yet is not their joy the greater through him. This is also a vain thing and a vexation of mind. (v17) When thou comest into the house of God, keep thy foot and draw nigh, that thou mayest hear: that is better than the offerings of fools, for they know not what evil they do

He that loveth money, will never be satisfied with money: and whoso delighteth in riches, shall have no profit thereof. Is not this also a vain thing?

When God giveth a man riches, goods and honour, so that he wanteth nothing of all that his heart can desire, and yet God giveth him not leave to enjoy the same, but another man spendeth them. This is a vain thing and a miserable plague.

The sight of the eyes is better, then that the soul should so depart away. Howbeit, this is also a vain thing and a disquietness of mind.

For who knoweth what is good for man living, in the days of his vain life, which is but a shadow? Or, who will tell a man what shall happen after him under the Sun?

For the laughing of fools is like the crackling of thorns under a pot. And that is but a vain thing.

For I have oft seen the ungodly brought to their graves, and fallen down from the high and glorious place; insomuch that they were forgotten in the city where they were had in so high and great reputation. This is also a vain thing.

Yet is there a vanity upon earth: there be just men, unto whom it happeneth, as though they had the works of the ungodly; Again, there be ungodly, with whom it goeth as though they had the works of the righteous. This me think also a vain thing.