In 1 Corinthians 7, very practical issues in life are expressed in the area of relationships and marriage. It's shown that God cares about the relationships we form and has some very specific choices that will lead us in the right direction. In particular, marriage is a very special and distinctive relationship that can't be taken in part.
The basis of the chapter also reveals that there is a gap between the way our mainstream society thinks, and how God thinks. Society presents us with a series of dreams and hopes for the future that may impede our relationship with God.
In order to keep God as the influence in our life, and not the dreams of our countrymen, then we need to be vigilant about how we interact with society and how much we let it form our thought process.
The Pearl of Great Value
Matthew 13:45: "Again, the Kingdom of Heaven is like a man who is a merchant seeking fine pearls, 46. who having found one pearl of great price, he went and sold all that he had, and bought it. WEB
When he found the precious pearl, that became his focus in life, and the value of having it was so much greater than the value of having his current possessions. He was willing to give those thing up for the opportunity to have that pearl as his possession. It was the desirability of that pearl that all those other things were not to be valued anymore.
The analogy is that the kingdom of God is of such great value that people will be needing to give up many aspects of their life in order to have a part in it. Not only that, but it will be something that is done gladly, and not out of regret. It's like giving up the old worn-out car for the sake of getting the shiny new one. There may be the occasional twinge of regret, but overall it is moving toward something more desirable.
Of course, this is not to say that it's a wise thing to invest in great pearls or new cars, but it's just an analogy for the promise that does have that value.
1 Cor 7 is a chapter about leaving behind one set of possessions in life in order to be a part of a much greater possession. It's about the process of putting on the mind of Christ