Ecclesiastes 3:9-15

9What profit is there for the worker from that in which he labors?

10I have seen the task which God has given to the sons of men with which to occupy themselves.

11He has made everything beautiful and appropriate in its time. He has also planted eternity [a sense of divine purpose] in the human heart [a mysterious longing which nothing under the sun can satisfy, except God]—yet man cannot find out (comprehend, grasp) what God has done (His overall plan) from the beginning to the end.

12I know that there is nothing better for them than to rejoice and to do good as long as they live;

13and also that every man should eat and drink and see and enjoy the good of all his labor—it is the gift of God.

14I know that whatever God does, it endures forever; nothing can be added to it nor can anything be taken from it, for God does it so that men will fear and worship Him [with awe-filled reverence, knowing that He is God].

15That which is has already been, and that which will be has already been, for God seeks what has passed by [so that history repeats itself].