Ecclesiastes 8:7; Ecclesiastes 8:15; Ecclesiastes 8:17 (King James Version)

7 For he knoweth not that which shall be: for who can tell him when it shall be? 15 Then I commended mirth, because a man hath no better thing under the sun, than to eat , and to drink , and to be merry : for that shall abide with him of his labour the days of his life, which God giveth him under the sun. 17 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 labour 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.