'Unto' in the Bible

All the rivers run into the sea, yet the sea is not full: unto the place whither the rivers go, thither they go again.

And I hated life; for the work that is wrought under the sun was grievous unto me; for all is vanity and pursuit of the wind.

And I hated all my labour wherewith I had been toiling under the sun, because I should leave it unto the man that shall be after me.

All go unto one place: all are of the dust, and all return to dust.

When thou vowest a vow unto God, defer not to pay it; for he hath no pleasure in fools: pay that which thou hast vowed.

Also give not heed unto all words that are spoken, lest thou hear thy servant curse thee.

because the word of a king is power; and who may say unto him, What doest thou?

All this have I seen, and applied my heart unto every work that is done under the sun: there is a time when man ruleth man to his hurt.

There is a vanity which is done upon the earth; that there are righteous men unto whom it happeneth according to the work of the wicked; and there are wicked men to whom it happeneth according to the work of the righteous. I said that this also is vanity.

This also have I seen as wisdom under the sun, and it was great unto me.

and the dust return to the earth as it was, and the spirit return unto God who gave it.