Then I  beheld  all  the  work  of  God ,  that  a  man  cannot  find  out  the  work  that  is  done  under  the  sun :  because  though  a  man  labor  to seek   it  out , yet he shall  not  find   it  ;  yea  further;  though  a  wise   man  think  to  know   it  , yet shall he  not  be  able  to  find   it  .