What do you use to determine value? That's often done with numbers, dollars, and other measurements, so that whenever you get more in those areas, there is greater value.
The spiritual wealth that we have in Christ puts all such value systems into perspective, because in this life there is nothing greater than belonging to our Savior. Citizens of God's heavenly kingdom gladly give up everything in order to keep it. What is more, the eternal riches we have in Christ marginalizes everything else. As a result, before the end of the age comes we are eager to show others the gospel of Jesus.