'Man' in the Bible

What does a man gain from all of the work that he undertakes on earth?

Everything is wearisome, more than man is able to express. The eye is never satisfied by seeing, nor the ear by hearing.

I also accumulated silver, gold, and the wealth of kings and their kingdoms. I gathered around me both male and female singers, along with what delights a man all sorts of mistresses.

For neither the wise nor the fool will be long remembered, since in days to come everything will be forgotten. The wise man dies the same way as the fool, does he not?

Sweet is the sleep of a working man, whether he eats a little or a lot, but the excess wealth of the rich will not allow him to rest.

a man to whom God gives wealth, riches, and honor, so that he lacks none of his heart's desires but God does not give him the capability to enjoy them. Instead, a stranger consumes them. This is pointless and a grievous affliction.

A man might father a hundred children, and live for many years, so that the length of his life is long but if his life does not overflow with goodness, and he doesn't receive a proper burial, I maintain that stillborn children are better off than he is,

For what advantage has the wise person over the fool? What advantage does the poor man have in knowing how to face life?

For there is not a single righteous man on earth who practices good and does not sin.

Among the things I seek but have not found: one man among a thousand I did find, but I have not found one woman to be wise among all these.

Here is a pointless thing that happens on earth: A righteous man receives what happens to the wicked, and a wicked man receives what happens to the righteous. I concluded that this, too, is pointless.

So then I recommended enjoyment of life, because it is better on earth for a man to eat, drink, and be happy, since this will stay with him throughout his struggle all the days of his life, which God grants him on earth.

I saw all of it as the activity of God. Frankly, a human being cannot understand what happens on earth, because however hard a man works to discover it, he will not find out. Despite what he thinks he knows, he will not be able to figure it out.

Now there was found within it a poor, but wise man. He delivered the city by his wisdom, but not one person remembered that poor man.

So enjoy yourself in your youth, young man, and be encouraged during your younger days. Live as you like, consistent with your world view, but keep in mind that God will bring you to account for everything.