From Chapter 1 Buried Treasure:
"The kingdom of heaven is like treasure hidden in a field. When a man found it, he hid it again, and then in his joy went and sold all that he had and bought that field." Matthew 13:44 (NIV)If we miss the phrase "in his joy" (in the quote from Matthew) we miss everything. The man wasn't exchanging lesser treasures for greater treasures out of dutiful drudgery... He would have been a fool not to do exactly what he did.
...Jesus is appealing to what we do value--temporary, earthly treasure--in order to make an analogy about what we should value--eternal heavenly treasure.
...there's a fundamental connection between our spiritual lives and how we think about and handle money. We may try to divorce our faith and our finances, but God sees them as inseparable.