Ecclesiastes 5:18-20

18I have seen personally what is the only beneficial and appropriate course of action for people: to eat and drink, and find enjoyment in all their hard work on earth during the few days of their life which God has given them, for this is their reward.

19To every man whom God has given wealth, and possessions, he has also given him the ability to eat from them, to receive his reward and to find enjoyment in his toil; these things are the gift of God.

20For he does not think much about the fleeting days of his life because God keeps him preoccupied with the joy he derives from his activity.