THE PROMISE OF REWARD
29 “Truly I tell you,” Jesus said, “there is no one who has left house or brothers or sisters or mother or father[Other mss add or wife] or children or fields for my sake and for the sake of the gospel, 30 who will not receive a hundred times more, now at this time —houses, brothers and sisters, mothers and children, and fields, with persecutions —and eternal life in the age to come.
Mark 10:29–30 CSB
17 Instruct those who are rich in the present age not to be arrogant or to set their hope on the uncertainty of wealth, but on God,[Other mss read on the living God] who richly provides us with all things to enjoy. 18 Instruct them to do what is good, to be rich in good works, to be generous and willing to share, 19 storing up treasure for themselves as a good foundation for the coming age, so that they may take hold of what is truly life.
1 Timothy 6:17–19 CSB
C. S. Lewis distinguishes two kinds of reward:
“We must not be troubled by unbelievers when they say that this promise of reward makes the Christian life a mercenary affair. There are different kinds of reward. There is the reward which has no natural connection with the things you do to earn it, and is quite foreign to the desires that ought to accompany those things. Money is not the natural reward of love; that is why we call a man a mercenary if he married a woman for the sake of her money. But marriage is the proper reward for a real lover, and he is not mercenary for desiring it. … The proper rewards are not simply tacked on to the activity for which they are given, but are the activity itself in consummation.”
From the sermon “The Weight of Glory” by C. S. Lewis
Rewards in the kingdom of heaven are based on our faithfulness to the opportunities we have been given during our earthly lives. These rewards are the consummation of the pursuit of God.
Daily Growth, September 17, 2020, “Daily Encouragement, THE PROMISE OF REWARD” from Handbook to Wisdom