Ecclesiastes 3:12-13; Ecclesiastes 3:22

12 I know that nothing is better for them than to rejoice, and to do good in their lives,

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

22 So I perceived that nothing is better than that a man should rejoice in his own works, for that is his heritage. For who can bring him to see what will happen after him?