In the parable of the treasure hidden in a field, Jesus’ purpose was not to explain the gospel in theological terms but rather to emphasize its dramatic effect on the believer. “In his joy,” we read, the man in the story gave up everything he had in exchange for his newfound treasure. He would never have done this for the sake of doubt or guilt, which are poor motivators. Though a man may feel ever so justified for his doubts, and though he may feel ever so virtuous about the load of guilt he carries – for doesn’t this show how well he understands his sinfulness? – still such feelings can never motivate him to live as God wants him to.
To follow and obey God, we need joy. We need to catch a glimpse of the greatest treasure of all – the “inexpressible and glorious joy” (I Peter 1:8) of believing in Christ.
— Mike Mason, Champagne for the Soul, p. 13-14