In two short parables, a treasure hidden in a field and a pearl of great value, Jesus shows people giving up everything they have for something worth far more. The lesson defines the kingdom of God as the rule and reign of Christ, righteousness and peace and joy in the Holy Spirit. It is worth more than every treasure of this world combined, yet it is hidden, and no one sees its true worth unless the Spirit reveals it. Seeing it is a gift: unless one is born again, he cannot see the kingdom.
The treasure is finally Christ Himself, in whom are hidden all the treasures of wisdom and knowledge, and in Him believers receive an inheritance that cannot fade. The kingdom has a cost, since disciples must deny themselves and count all things loss to gain Christ. The man sells everything with joy, because we gladly pursue what we value most.