'Children Of Men' in the Bible

And I applied my heart to seek and search out by wisdom concerning all that is done under the heavens: this grievous occupation hath God given to the children of men to weary themselves therewith.

I searched in my heart how to cherish my flesh with wine, while practising my heart with wisdom; and how to lay hold on folly, till I should see what was that good for the children of men which they should do under the heavens all the days of their life.

I gathered me also silver and gold, and the peculiar treasure of kings and of the provinces; I got me men-singers and women-singers, and the delights of the children of men, a wife and concubines.

I said in my heart, It is thus with the children of men, that God may prove them, and that they should see that they themselves are but beasts.

For what befalleth the children of men befalleth beasts; even one thing befalleth them: as the one dieth, so dieth the other, and they have all one breath; and man hath no pre-eminence above the beast: for all is vanity.

Who knoweth the spirit of the children of men? Doth it go upwards? and the spirit of the beasts, doth it go downwards to the earth?

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

This is an evil among all that is done under the sun, that one thing befalleth all: yea, also the heart of the children of men is full of evil, and madness is in their heart while they live; and after that, they have to go to the dead.

For man also knoweth not his time: as the fishes that are taken in an evil net, and as the birds that are taken with the snare, like them are the children of men snared in an evil time, when it falleth suddenly upon them.