'Sons of Men' in the Bible

And I gave my heart to seek and search out by wisdom concerning all which is done under the heavens. It is a sad task God has given to the sons of men to be humbled by it.

I sought in my heart to drag my flesh with wine, yet leading my heart with wisdom; and to lay hold on folly, until I might see where the good for the sons of men might be, what they should do under the heavens all the days of their life.

I also gathered silver and gold to myself, and the treasure of kings and of the provinces. I got men singers and women singers for myself, and the delights of the sons of men, a wife and very many wives.

I have seen the task which God has given to the sons of men to be humbled by it.

I said in my heart concerning the matter of sons of men, that God might reveal them, and that they might see that they themselves are beasts.

For that which happens to the sons of men also happens to beasts, even one thing happens to them. As this one dies, so that one dies; yea, they all have one breath; so that a man has no advantage over a beast; for all is vanity.

Because sentence against an evil work is not executed speedily, therefore the heart of the sons of men is fully set in them to do evil.

This is an evil among all things that are done under the sun, that there is one event to all. Yea, also the heart of the sons of men is full of evil, and madness is in their heart while they live, and after that they go to the dead.

For man also does not know his time; as the fishes that are taken in an evil net, and as the birds that are caught in the snare; so are the sons of men snared in an evil time, when it falls suddenly on them.