'Yet' in the Bible

And who knoweth whether he is wise or foolish? yet he doth rule over all my labour that I have laboured at, and that I have done wisely under the sun! this also is vanity.

And I am praising the dead who have already died above the living who are yet alive.

And better than both of them is he who hath not yet been, in that he hath not seen the evil work that hath been done under the sun.

And though he had lived a thousand years twice over, yet good he hath not seen; to the same place doth not every one go?

All the labour of man is for his mouth, and yet the soul is not filled.

then I considered all the work of God, that man is not able to find out the work that hath been done under the sun, because though man labour to seek, yet he doth not find; and even though the wise man speak of knowing he is not able to find.