Ecclesiastes 6:12

¹⁰  That which hath been is named already, and it is known that it is man: neither may he contend with him that is mightier than he.

¹¹  Seeing there be many things that increase vanity, what is man the better?

¹²  For who knoweth what is good for man in this life, all the days of his vain life which he spendeth as a shadow? for who can tell a man what shall be after him under the sun?