Roman Catechism 36.26

Chapter 36 — Part IV: Prayer — The Second Petition: Thy Kingdom Come

Section 26. We Should Prize God's Kingdom Above All Things — He should exhort them, in the first place, to consider the force and import of that similitude of the Redeemer: The kingdom of heaven is like a treasure hidden in a field: which when a man hath found he hideth, and for joy thereof goeth and selleth all that he hath, and buyeth that field. He who knows the riches of Christ the Lord will despise all things when compared to them; to him wealth, riches, power, will appear as dross. Nothing can be compared to, or stand in competition with that inestimable treasure. Whoever, then, is blessed with this knowledge will say with the Apostle: I esteem all things to be but loss, and count them but as dung, that I may gain Christ. This is that precious jewel of the Gospel, and he who sells all his earthly goods to purchase it shall enjoy an eternity of bliss.