Fool’s Gold.
“The term has come to denote any apparent treasure trove that turns out to be worthless.”
http://www.phrases.org.uk/meanings/140000.html
Or …
The Pearl Of Great Price.
Matthew 13:45-46 Again, the kingdom of heaven is like unto a merchant man, seeking goodly pearls: Who, when he had found one pearl of great price, went and sold all that he had, and bought it.
Matthew Henry Commentary:
Parable of the treasure hid in the field. Many slight the gospel, because they look only upon the surface of the field. But all who search the Scriptures, so as in them to find Christ and eternal life, (John 5:39 Search the scriptures; for in them ye think ye have eternal life: and they are they which testify of me.), will discover such treasure in this field as makes it unspeakably valuable; they make it their own upon any terms. Though nothing can be given as a price for this salvation, yet much must be given up for the sake of it. All the children of men are busy; one would be rich, another would be honourable, another would be learned; but most are deceived, and take up with counterfeits for pearls. Jesus Christ is a Pearl of great price; in having him, we have enough to make us happy here and for ever. A man may buy gold too dear, but not this Pearl of great price. When the convinced sinner sees Christ as the gracious Saviour, all things else become worthless to his thoughts.
Fool’s Gold. Makes me think of this poem by H.A. Ironside …
It may not be for silver
It may not be for gold,
But still by tens of thousands
Is this precious Savior sold.
Sold for a godless friendship,
Sold for a selfish aim,
Sold for a fleeting trifle,
Sold for an empty name.
Sold in the mart of Science,
Sold in the seat of Power,
Sold at the shrine of Fortune,
Sold in Pleasure’s bower.
Sold where the awful bargain
None but God’s eye can see!
Ponder, my soul, the question:
Shall He be sold by thee?