13 Wherefore do you applaud yourself in those vain and silly conceits, as if you were withheld from good works by fear and solicitude for the future? Why do you lay out before you certain shadows and omens of a vain excuse? Yea, confess what is the truth; and since you cannot deceive those who know, utter forth the secret and hidden things of your mind. The gloom of barrenness has besieged your mind; and while the light of truth has departed thence, the deep and profound darkness of avarice has blinded your carnal heart.
You are the captive and slave of your money; you are bound with the chains and bonds of covetousness; and you whom Christ had once loosed, are once more in chains. You keep your money, which, when kept, does not keep you. You heap up a patrimony which burdens your with its weight; and you do not remember what God answered to the rich man, who boasted with a foolish exultation of the abundance of his exuberant harvest: “You fool,” said He, “this night your soul is required of you; then whose shall those things be which you have provided?” Why do you watch in loneliness over your riches?
Why for your punishment do you heap up the burden of your patrimony, that, in proportion as you are rich in this world, you may become poor to God? Divide your returns with the Lord your God; share your gains with Christ; make Christ a partner with you in your earthly possessions, that He also may make you a fellow-heir with Him in His heavenly kingdom.
Source: The Treatises of Cyprian (New Advent)