Ecclesiastes 3:11-14; Ecclesiastes 3:22

11 He has made everything appropriate in its time. He has also set eternity in their heart, yet so that man will not find out the work which God has done from the beginning even to the end.

12 I know that there is nothing better for them than to rejoice and to do good in one's lifetime;

13 moreover, that every man who eats and drinks sees good in all his labor -it is the gift of God.

14 I know that everything God does will remain forever; there is nothing to add to it and there is nothing to take from it, for God has so worked that men should fear Him.

22 I have seen that nothing is better than that man should be happy in his activities, for that is his lot. For who will bring him to see what will occur after him?