Why don’t people ask us about our hope? The answer is probably that we look as if we hope in in the same things they do. Our lives don’t look like they are on the Calvary road, stripped down for sacrificial love, serving others with the sweet assurance that we don’t need to be rewarded in this life. Our reward is great in heaven (Matthew 5:12)! “You will be repaid at the resurrection of the just” (Luke 14:14). If we believed this more deeply, others might see the worth of God and find in him their gladness.
(John Piper, Don’t Waste Your Life, p. 109)