'Reward' in the Bible
I did not restrain myself from getting whatever I wanted; I did not deny myself anything that would bring me pleasure. So all my accomplishments gave me joy; this was my reward for all my effort.
So I perceived there is nothing better than for people to enjoy their work, because that is their reward; for who can show them what the future holds?
I 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.
To 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.
For the living know that they will die, but the dead do not know anything; they have no further reward -- and even the memory of them disappears.
Enjoy life with your beloved wife during all the days of your fleeting life that God has given you on earth during all your fleeting days; for that is your reward in life and in your burdensome work on earth.